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

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =2a(5) =6a(6) =7a(7) =14a(8) =11a(9) =42a(10) =39a(11) =70a(12) =95a(13) =142a(14) =239a(15) =378a(16) =418a(17) =624a(18) =1106a(19) =1200a(20) =2250a(21) =2836a(22) =4166a(23) =4902a(24) =8021a(25) =10410a(26) =14961a(27) =21268a(28) =29477a(29) =36714