import java.io.*;
import java.util.*;
import java.math.*;
// import java.awt.Point;
 
public class Main {
    InputStream is;
    PrintWriter out;
    String INPUT = "";
 
    static int mod = 1_000_000_007;
    long inf = Long.MAX_VALUE;

    void solve(){
        int n = ni();
        long[] a = new long[n];
        for(int i = 0; i < n; i++){
            a[i] = nl();
        }
        long[] l1 = new long[n+1];
        long[] l2 = new long[n+1];

        long[] cum1 = new long[n+1];
        long[] cum2 = new long[n+1];

        int mod = 1000000007;
        int[][] fif = enumFIF(1000000, mod);

        for(int i = 0; i <= n-1; i++){
            l1[i] = C(n,i+1,mod,fif)%mod * fif[0][i]%mod * fif[0][n-i-1]%mod;
            cum1[i+1] += cum1[i] + l1[i];
            cum1[i+1] %= mod;
        }

        for(int i = 0; i <= n-2; i++){
            l2[i] = C(n,i+2,mod,fif)%mod * 2 * fif[0][i]%mod * fif[0][n-i-2]%mod;
            cum2[i+1] += cum2[i] + l2[i];
            cum2[i+1] %= mod;
        }

        // for(int i = 0; i < n; i++){
        //     out.println(l1[i]);
        //     out.println(l2[i]);
        // }
        long sum = 0;
        long[] res1 = new long[n];
        long[] res2 = new long[n];
        for(int i = 1; i <= n/2; i++){
            res2[i] += res2[i-1] + cum2[n-i] - cum2[i];
            res2[i] = (res2[i]+10000000l*mod)%mod;
        }

        for(int i = 0; i <= n/2; i++){
            if(i==0){
                res1[i] = cum1[n];
            }
            else{
                res1[i] = res1[i-1];
                res1[i] -= l1[i];
                res1[i] += l1[n-i];
            }
            res1[i] = (res1[i]+10000000l*mod)%mod;
        }
        for(int i = 0; i < n; i++){
            long t1 = (i<=n/2 ?  res1[i] : res1[n-i-1]);
            long t2 = (i<=n/2 ?  res2[i] : res2[n-i-1]);
            sum += a[i] * t2 % mod;
            sum %= mod;
            sum += a[i] * t1 % mod;
            sum %= mod;
            // out.println(t1);
            // out.println(t2);
        }
        // for(int i = 0; i < n; i++){
        //     sum += a[i]*fif[0][n];
        //     sum %= mod;
        // }

        out.println(sum%mod);
    }

    public static long C(int n, int r, int mod, int[][] fif) {
        if (n < 0 || r < 0 || r > n)
            return 0;
        return (long) fif[0][n] * fif[1][r] % mod * fif[1][n - r] % mod;
    }

    
    public static int[][] enumFIF(int n, int mod) {
        int[] f = new int[n + 1];
        int[] invf = new int[n + 1];
        f[0] = 1;
        for (int i = 1; i <= n; i++) {
            f[i] = (int) ((long) f[i - 1] * i % mod);
        }
        long a = f[n];
        long b = mod;
        long p = 1, q = 0;
        while (b > 0) {
            long c = a / b;
            long d;
            d = a;
            a = b;
            b = d % b;
            d = p;
            p = q;
            q = d - c * q;
        }
        invf[n] = (int) (p < 0 ? p + mod : p);
        for (int i = n - 1; i >= 0; i--) {
            invf[i] = (int) ((long) invf[i + 1] * (i + 1) % mod);
        }
        return new int[][] { f, invf };
    }

    void run() throws Exception
    {
        is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
        out = new PrintWriter(System.out);
        long s = System.currentTimeMillis();
        solve();
        out.flush();
        if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
    }
    
    public static void main(String[] args) throws Exception { new Main().run(); }
    
    private byte[] inbuf = new byte[1024];
    private int lenbuf = 0, ptrbuf = 0;
    
    private int readByte()
    {
        if(lenbuf == -1)throw new InputMismatchException();
        if(ptrbuf >= lenbuf){
            ptrbuf = 0;
            try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
            if(lenbuf <= 0)return -1;
        }
        return inbuf[ptrbuf++];
    }
    
    private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
    private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
    
    private double nd() { return Double.parseDouble(ns()); }
    private char nc() { return (char)skip(); }
    
    private String ns()
    {
        int b = skip();
        StringBuilder sb = new StringBuilder();
        while(!(isSpaceChar(b) && b != ' ')){
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    
    private char[] ns(int n)
    {
        char[] buf = new char[n];
        int b = skip(), p = 0;
        while(p < n && !(isSpaceChar(b))){
            buf[p++] = (char)b;
            b = readByte();
        }
        return n == p ? buf : Arrays.copyOf(buf, p);
    }
    
    private char[][] nm(int n, int m)
    {
        char[][] map = new char[n][];
        for(int i = 0;i < n;i++)map[i] = ns(m);
        return map;
    }
    
    private int[] na(int n)
    {
        int[] a = new int[n];
        for(int i = 0;i < n;i++)a[i] = ni();
        return a;
    }
    
    private int ni()
    {
        int num = 0, b;
        boolean minus = false;
        while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
        if(b == '-'){
            minus = true;
            b = readByte();
        }
        
        while(true){
            if(b >= '0' && b <= '9'){
                num = num * 10 + (b - '0');
            }else{
                return minus ? -num : num;
            }
            b = readByte();
        }
    }
    
    private long nl()
    {
        long num = 0;
        int b;
        boolean minus = false;
        while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
        if(b == '-'){
            minus = true;
            b = readByte();
        }
        
        while(true){
            if(b >= '0' && b <= '9'){
                num = num * 10 + (b - '0');
            }else{
                return minus ? -num : num;
            }
            b = readByte();
        }
    }
    
    private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); }
 
}


Measured memory_bytes: 35668