Assertion: sequence's number | /r/CapableOf | give the solution
Facets:
value: to certain enumerative problems
type: TRANSITIVE-OBJECT
Source sentences:
text: These numbers also give the solution to certain enumerative problems, the most common of which is that of counting the number of ways of writing a given number n as an ordered sum of 1s and 2s (called compositions); there are F n+1 ways to do this.