Expansion of -1/(1 - x)^2 + (1/(1 - x))*Product_{k>=1} (1 + x^k).

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =4a(6) =7a(7) =11a(8) =16a(9) =23a(10) =32a(11) =43a(12) =57a(13) =74a(14) =95a(15) =121a(16) =152a(17) =189a(18) =234a(19) =287a(20) =350a(21) =425a(22) =513a(23) =616a(24) =737a(25) =878a(26) =1042a(27) =1233a(28) =1454a(29) =1709