G.f.: 1 / Product_{n>=0} (1 - x^(n+5))^((n+1)*(n+2)*(n+3)*(n+4)/4!).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =5a(7) =15a(8) =35a(9) =70a(10) =127a(11) =215a(12) =360a(13) =605a(14) =1080a(15) =2003a(16) =3890a(17) =7570a(18) =14715a(19) =27960a(20) =52255a(21) =95705a(22) =173295a(23) =311060a(24) =557400a(25) =999032a(26) =1795880a(27) =3235130a(28) =5835955a(29) =10521060