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

Terms

a(0) =1a(1) =-1a(2) =-4a(3) =-5a(4) =-7a(5) =27a(6) =17a(7) =167a(8) =110a(9) =-42a(10) =10a(11) =-706a(12) =-4001a(13) =-3915a(14) =3079a(15) =-18640a(16) =9869a(17) =21403a(18) =130565a(19) =107250a(20) =-15661a(21) =420664a(22) =599540a(23) =-161785a(24) =-1232833a(25) =-5836888a(26) =-5129796a(27) =6516714a(28) =-29068180a(29) =-14953045