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

Terms

a(0) =1a(1) =2a(2) =5a(3) =12a(4) =24a(5) =50a(6) =97a(7) =184a(8) =331a(9) =606a(10) =1061a(11) =1834a(12) =3125a(13) =5228a(14) =8673a(15) =14250a(16) =23034a(17) =36894a(18) =58750a(19) =92298a(20) =144398a(21) =223994a(22) =344916a(23) =527116a(24) =801295a(25) =1209870a(26) =1816539a(27) =2713956a(28) =4033169a(29) =5961700