Number of compositions of n such that the smallest part has multiplicity four.

Terms

a(0) =1a(1) =0a(2) =5a(3) =5a(4) =21a(5) =35a(6) =85a(7) =175a(8) =366a(9) =730a(10) =1481a(11) =2925a(12) =5726a(13) =11110a(14) =21375a(15) =40766a(16) =77266a(17) =145495a(18) =272290a(19) =506836a(20) =938783a(21) =1730725a(22) =3176920a(23) =5808020a(24) =10578162a(25) =19197898a(26) =34725765a(27) =62616485a(28) =112574807a(29) =201827366