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

Terms

a(0) =1a(1) =2a(2) =10a(3) =36a(4) =118a(5) =376a(6) =1156a(7) =3392a(8) =9734a(9) =27230a(10) =74256a(11) =198724a(12) =522292a(13) =1348968a(14) =3432824a(15) =8613856a(16) =21330374a(17) =52190692a(18) =126262774a(19) =302222388a(20) =716247128a(21) =1681575344a(22) =3912919956a(23) =9028823856a(24) =20667406276a(25) =46949343786a(26) =105881451120a(27) =237135574392a(28) =527580701456