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

Terms

a(0) =1a(1) =1a(2) =-4a(3) =5a(4) =3a(5) =-17a(6) =33a(7) =-61a(8) =67a(9) =63a(10) =-392a(11) =803a(12) =-1070a(13) =898a(14) =482a(15) =-4449a(16) =11362a(17) =-18630a(18) =21105a(19) =-11067a(20) =-24871a(21) =103562a(22) =-227004a(23) =359040a(24) =-417697a(25) =266106a(26) =312987a(27) =-1578543a(28) =3635615a(29) =-6157911