Number of 5-compositions of n.

Terms

a(0) =1a(1) =5a(2) =40a(3) =310a(4) =2395a(5) =18501a(6) =142920a(7) =1104060a(8) =8528890a(9) =65885880a(10) =508970002a(11) =3931805460a(12) =30373291380a(13) =234634403620