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

Terms

a(0) =1a(1) =2a(2) =8a(3) =26a(4) =73a(5) =210a(6) =558a(7) =1460a(8) =3663a(9) =9090a(10) =21846a(11) =51690a(12) =120140a(13) =274480a(14) =618656a(15) =1374792a(16) =3017867a(17) =6546610a(18) =14053312a(19) =29852658a(20) =62825894a(21) =131025056a(22) =270948160a(23) =555811298a(24) =1131498850a(25) =2286780266a(26) =4589706604a(27) =9151298134a(28) =18131193484a(29) =35706460678