G.f. satisfies A(x) = 1 + x*A(x) / (1 - x^5*A(x)^4).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =7a(8) =22a(9) =57a(10) =127a(11) =254a(12) =478a(13) =903a(14) =1838a(15) =4148a(16) =10012a(17) =24417a(18) =58019a(19) =132919a(20) =295699a(21) =649742a(22) =1437719a(23) =3247500a(24) =7504925a(25) =17607055a(26) =41465646a(27) =97197400a(28) =226053017a(29) =522505492