Number of compositions of n where the difference between largest and smallest parts equals five.

Terms

a(0) =0a(1) =0a(2) =2a(3) =3a(4) =12a(5) =23a(6) =61a(7) =135a(8) =303a(9) =667a(10) =1459a(11) =3135a(12) =6718a(13) =14288a(14) =30211a(15) =63586a(16) =133322a(17) =278508a(18) =580013a(19) =1204583a(20) =2495522a(21) =5158394a(22) =10641188a(23) =21911154a(24) =45041042a(25) =92443955a(26) =189464447a(27) =387794944a(28) =792761978a(29) =1618774478