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

Terms

a(0) =1a(1) =-1a(2) =-5a(3) =-10a(4) =3a(5) =42a(6) =124a(7) =160a(8) =15a(9) =-677a(10) =-1941a(11) =-3425a(12) =-2807a(13) =3488a(14) =21004a(15) =49547a(16) =77879a(17) =63395a(18) =-65104a(19) =-406091a(20) =-988889a(21) =-1655508a(22) =-1779329a(23) =-145347a(24) =5087175a(25) =15405270a(26) =30158849a(27) =42617486a(28) =36116136a(29) =-19457047