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

Terms

a(0) =1a(1) =-1a(2) =0a(3) =0a(4) =-4a(5) =4a(6) =0a(7) =0a(8) =6a(9) =-15a(10) =9a(11) =0a(12) =-4a(13) =40a(14) =-36a(15) =0a(16) =-15a(17) =-39a(18) =90a(19) =-36a(20) =64a(21) =-28a(22) =-180a(23) =144a(24) =-96a(25) =206a(26) =106a(27) =-300a(28) =148a(29) =-540