// Slower C++ solution:
#include<bits/stdc++.h>

#define sqr(x) ((x)*(x))

#define ll long long

#define ull unsigned long long

#define ui unsigned int

#define ld long double

#define vi vector<int>

#define all(a) a.begin(),a.end()

#define HEAP(...) priority_queue<__VA_ARGS__ >

#define heap(...) priority_queue<__VA_ARGS__,vector<__VA_ARGS__ >,greater<__VA_ARGS__ > > 

#define pii pair<int,int> 

#define pb push_back

#define mp make_pair

#define debuge cerr<<"isok"<<endl

#define debug(x) cerr<<#x<<"="<<x<<endl

#define dprintf(...) fprintf(stderr,__VA_ARGS__)

#define SS second

#define FF first

#define ls (k<<1)

#define rs (k<<1|1)

#define clr(a,x) memset(a,x,sizeof(a))

#define cpy(a,x) memcpy(a,x,sizeof(a))

#define file(x) freopen(x".in","r",stdin),freopen(x".out","w",stdout)

#define SZ(x) ((int)x.size())

using namespace std;

template<class T> inline void gmin(T &x,const T &y){x=x>y?y:x;}

template<class T> inline void gmax(T &x,const T &y){x=x<y?y:x;}

template<class T> inline bool Gmin(T &x,const T &y){return x>y?x=y,1:0;}

template<class T> inline bool Gmax(T &x,const T &y){return x<y?x=y,1:0;}

const int BufferSize=1<<16;

char buffer[BufferSize],*Bufferhead,*Buffertail;

bool Terminal;

inline char Getchar(){

	if(Bufferhead==Buffertail){

		int l=fread(buffer,1,BufferSize,stdin);

		if(!l){Terminal=1;return 0;}

		Buffertail=(Bufferhead=buffer)+l;

	}

	return *Bufferhead++;

}

template<class T>inline bool read(T &x){

	x=0;char c=Getchar(),rev=0;

	while(c<'0'||c>'9'){rev|=c=='-';c=Getchar();if(Terminal)return 0;}

	while(c>='0'&&c<='9') x=x*10+c-'0',c=Getchar();

	if(c=='.'){

		c=Getchar();double t=0.1;

		while(c>='0'&&c<='9') x=x+(c-'0')*t,c=Getchar(),t=t/10;

	}

	x=rev?-x:x;

	return 1;

}

template<class T1,class T2> inline bool read(T1 &x,T2 &y){return read(x)&read(y);}

template<class T1,class T2,class T3> inline bool read(T1 &x,T2 &y,T3 &z){return read(x)&read(y)&read(z);}

template<class T1,class T2,class T3,class T4> inline bool read(T1 &x,T2 &y,T3 &z,T4 &w){return read(x)&read(y)&read(z)&read(w);}

inline bool reads(char *x){

	char c=Getchar();

	while(c<33||c>126){c=Getchar();if(Terminal)return 0;}

	while(c>=33&&c<=126) (*x++)=c,c=Getchar();

	*x=0;return 1;

}

template<class T>inline void print(T x,const char c='\n'){

	if(!x){putchar('0');putchar(c);return;}

	if(x<0) putchar('-'),x=-x;

	int m=0,a[20];

	while(x) a[m++]=x%10,x/=10;

	while(m--) putchar(a[m]+'0');

	putchar(c);

}

//--------------------------------head---------------------------------------------



const int inf=0x3f3f3f3f;

const int N=55,M=100005,mod=1e9+7;

template<class T,class S> inline void ch(T &x,const S y){x=(x+y)%mod;}

inline int exp(int x,int y,const int mod=::mod){

	int ans=1;

	while(y){

		if(y&1) ans=(ll)ans*x%mod;

		x=(ll)x*x%mod;y>>=1;

	}return ans;

}



int n,ans,f[N][N][N],s[N][N],fac[N],ifac[N];



inline int C(int x,int y){

	return x<y?0:(ll)fac[x]*ifac[y]%mod*ifac[x-y]%mod;

}



int main(){

#ifdef rqgao2014

	assert(freopen("input.txt","r",stdin));

#endif

	scanf("%d",&n);fac[0]=1;

	for(int i=1;i<=n;i++) fac[i]=(ll)fac[i-1]*i%mod;

	ifac[n]=exp(fac[n],mod-2);

	for(int i=n;i;i--) ifac[i-1]=(ll)ifac[i]*i%mod;

	f[0][1][0]=1;

	for(int i=1;i<=n;i++){

		clr(s,0);

		for(int j=i-1;j<=n;j++)

			for(int a=0;a<=n-j;a++)

				for(int b=0;b<=n-j-a;b++)

					for(int c=-b;c<=a;c++)

						ch(s[j+a+b][c+n],(ll)f[j][a][b]*ifac[j]%mod*ifac[a-c]%mod*ifac[b+c]);

		clr(f,0);

		for(int j=i;j<=n;j++)

			for(int a=0;a<=n-j;a++)

				for(int b=0;b<=n-j-a;b++)

					f[j][a][b]=(ll)s[j][a-b+n]*fac[j]%mod;

		ch(ans,f[n][0][0]);

		for(int j=i;j<=n;j++)

			f[j][0][0]=0;

	}

	printf("%d\n",ans);

	return 0;

}

// Faster C++ solution for the same problem (measured speedup: 3.662945311228513x):
#include<bits/stdc++.h>

#define sqr(x) ((x)*(x))

#define ll long long

#define ull unsigned long long

#define ui unsigned int

#define ld long double

#define vi vector<int>

#define all(a) a.begin(),a.end()

#define HEAP(...) priority_queue<__VA_ARGS__ >

#define heap(...) priority_queue<__VA_ARGS__,vector<__VA_ARGS__ >,greater<__VA_ARGS__ > > 

#define pii pair<int,int> 

#define pb push_back

#define mp make_pair

#define debuge cerr<<"isok"<<endl

#define debug(x) cerr<<#x<<"="<<x<<endl

#define dprintf(...) fprintf(stderr,__VA_ARGS__)

#define SS second

#define FF first

#define ls (k<<1)

#define rs (k<<1|1)

#define clr(a,x) memset(a,x,sizeof(a))

#define cpy(a,x) memcpy(a,x,sizeof(a))

#define file(x) freopen(x".in","r",stdin),freopen(x".out","w",stdout)

#define SZ(x) ((int)x.size())

using namespace std;

template<class T> inline void gmin(T &x,const T &y){x=x>y?y:x;}

template<class T> inline void gmax(T &x,const T &y){x=x<y?y:x;}

template<class T> inline bool Gmin(T &x,const T &y){return x>y?x=y,1:0;}

template<class T> inline bool Gmax(T &x,const T &y){return x<y?x=y,1:0;}

const int BufferSize=1<<16;

char buffer[BufferSize],*Bufferhead,*Buffertail;

bool Terminal;

inline char Getchar(){

	if(Bufferhead==Buffertail){

		int l=fread(buffer,1,BufferSize,stdin);

		if(!l){Terminal=1;return 0;}

		Buffertail=(Bufferhead=buffer)+l;

	}

	return *Bufferhead++;

}

template<class T>inline bool read(T &x){

	x=0;char c=Getchar(),rev=0;

	while(c<'0'||c>'9'){rev|=c=='-';c=Getchar();if(Terminal)return 0;}

	while(c>='0'&&c<='9') x=x*10+c-'0',c=Getchar();

	if(c=='.'){

		c=Getchar();double t=0.1;

		while(c>='0'&&c<='9') x=x+(c-'0')*t,c=Getchar(),t=t/10;

	}

	x=rev?-x:x;

	return 1;

}

template<class T1,class T2> inline bool read(T1 &x,T2 &y){return read(x)&read(y);}

template<class T1,class T2,class T3> inline bool read(T1 &x,T2 &y,T3 &z){return read(x)&read(y)&read(z);}

template<class T1,class T2,class T3,class T4> inline bool read(T1 &x,T2 &y,T3 &z,T4 &w){return read(x)&read(y)&read(z)&read(w);}

inline bool reads(char *x){

	char c=Getchar();

	while(c<33||c>126){c=Getchar();if(Terminal)return 0;}

	while(c>=33&&c<=126) (*x++)=c,c=Getchar();

	*x=0;return 1;

}

template<class T>inline void print(T x,const char c='\n'){

	if(!x){putchar('0');putchar(c);return;}

	if(x<0) putchar('-'),x=-x;

	int m=0,a[20];

	while(x) a[m++]=x%10,x/=10;

	while(m--) putchar(a[m]+'0');

	putchar(c);

}

//--------------------------------head---------------------------------------------



const int inf=0x3f3f3f3f;

const int N=55,M=100005,mod=1e9+7;

template<class T,class S> inline void ch(T &x,const S y){x=(x+y)%mod;}

inline int exp(int x,int y,const int mod=::mod){

	int ans=1;

	while(y){

		if(y&1) ans=(ll)ans*x%mod;

		x=(ll)x*x%mod;y>>=1;

	}return ans;

}



int n,ans,f[N][N][N],s[N][N],fac[N],ifac[N];



inline int C(int x,int y){

	return x<y?0:(ll)fac[x]*ifac[y]%mod*ifac[x-y]%mod;

}



int main(){

#ifdef rqgao2014

	assert(freopen("input.txt","r",stdin));

#endif

	scanf("%d",&n);fac[0]=1;

	for(int i=1;i<=n;i++) fac[i]=(ll)fac[i-1]*i%mod;

	ifac[n]=exp(fac[n],mod-2);

	for(int i=n;i;i--) ifac[i-1]=(ll)ifac[i]*i%mod;

	f[0][1][0]=1;

	for(int j=1;j<=n;j++){

		for(int a=0;a<=n-j+1;a++)

			for(int b=0;b<=n-j-a+1;b++)

				for(int c=-b;c<=a;c++)

					ch(s[j+a+b-1][c+n],(ll)f[j-1][a][b]*ifac[j-1]%mod*ifac[a-c]%mod*ifac[b+c]);

		for(int a=0;a<=n-j;a++)

			for(int b=0;b<=n-j-a;b++)

				f[j][a][b]=(ll)s[j][a-b+n]*fac[j]%mod;

		if(j^n) f[j][0][0]=0;

	}

	ch(ans,f[n][0][0]);

	printf("%d\n",ans);

	return 0;

}