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

Terms

a(0) =1a(1) =-1a(2) =-2a(3) =-4a(4) =0a(5) =3a(6) =17a(7) =24a(8) =40a(9) =9a(10) =-24a(11) =-149a(12) =-250a(13) =-435a(14) =-395a(15) =-281a(16) =514a(17) =1528a(18) =3542a(19) =5127a(20) =6920a(21) =5416a(22) =1368a(23) =-11136a(24) =-28533a(25) =-57051a(26) =-82846a(27) =-107315a(28) =-95655a(29) =-43646