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

Terms

a(0) =1a(1) =1a(2) =3a(3) =9a(4) =22a(5) =59a(6) =156a(7) =405a(8) =1061a(9) =2786a(10) =7284a(11) =19071a(12) =49948a(13) =130738a(14) =342288a(15) =896175a(16) =2346134a(17) =6142287a(18) =16080852a(19) =42100020a(20) =110219366a(21) =288558380a(22) =755455128a(23) =1977807393a(24) =5177967900a(25) =13556094631a(26) =35490316938a(27) =92914858431a(28) =243254253904a(29) =636847905903