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

Terms

a(0) =1a(1) =2a(2) =2a(3) =2a(4) =6a(5) =10a(6) =10a(7) =10a(8) =18a(9) =32a(10) =38a(11) =38a(12) =50a(13) =86a(14) =110a(15) =110a(16) =134a(17) =206a(18) =272a(19) =290a(20) =342a(21) =466a(22) =610a(23) =682a(24) =770a(25) =1012a(26) =1310a(27) =1492a(28) =1654a(29) =2130