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

Terms

a(0) =1a(1) =1a(2) =9a(3) =39a(4) =155a(5) =570a(6) =2131a(7) =7599a(8) =26667a(9) =90996a(10) =305144a(11) =1004173a(12) =3254123a(13) =10385884a(14) =32704819a(15) =101678860a(16) =312435675a(17) =949498206a(18) =2855953018a(19) =8507079361a(20) =25108844890a(21) =73468004480a(22) =213201630328a(23) =613871526178