Expansion of Product_{k>=1} (1 + x^k)^(k*(3*k-2)).

Terms

a(0) =1a(1) =1a(2) =8a(3) =29a(4) =89a(5) =301a(6) =915a(7) =2763a(8) =8040a(9) =22910a(10) =63776a(11) =174174a(12) =467448a(13) =1233836a(14) =3209679a(15) =8234149a(16) =20857621a(17) =52206847a(18) =129227514a(19) =316543962a(20) =767767628a(21) =1844925743a(22) =4394337797a(23) =10379319118a(24) =24320964976a(25) =56557678603a(26) =130571770387a(27) =299357973400a(28) =681777058604