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

Terms

a(0) =1a(1) =2a(2) =2a(3) =2a(4) =10a(5) =18a(6) =18a(7) =18a(8) =50a(9) =100a(10) =118a(11) =118a(12) =206a(13) =438a(14) =582a(15) =582a(16) =806a(17) =1606a(18) =2344a(19) =2506a(20) =3122a(21) =5322a(22) =8202a(23) =9498a(24) =11130a(25) =16844a(26) =26110a(27) =32272a(28) =37018a(29) =52274