Expansion of Product_{k>=1} 1/(1 - (k - 1)*x^k).

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =4a(5) =6a(6) =13a(7) =18a(8) =37a(9) =56a(10) =101a(11) =152a(12) =285a(13) =410a(14) =713a(15) =1118a(16) =1830a(17) =2780a(18) =4618a(19) =6934a(20) =11278a(21) =17092a(22) =26894a(23) =40822a(24) =64435a(25) =96372a(26) =149299a(27) =225104a(28) =345131a(29) =515394