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

Terms

a(0) =1a(1) =2a(2) =4a(3) =9a(4) =17a(5) =33a(6) =61a(7) =110a(8) =193a(9) =335a(10) =570a(11) =955a(12) =1582a(13) =2586a(14) =4185a(15) =6706a(16) =10646a(17) =16757a(18) =26178a(19) =40587a(20) =62503a(21) =95637a(22) =145445a(23) =219929a(24) =330766a(25) =494898a(26) =736858a(27) =1092027a(28) =1611185a(29) =2367079