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

Terms

a(0) =1a(1) =2a(2) =12a(3) =46a(4) =175a(5) =610a(6) =2107a(7) =6918a(8) =22256a(9) =69498a(10) =212649a(11) =636910a(12) =1874470a(13) =5423332a(14) =15457223a(15) =43433088a(16) =120467606a(17) =330077358a(18) =894193347a(19) =2396636236a(20) =6359325300a(21) =16714566278a(22) =43539016461a(23) =112449776138a(24) =288083439729a(25) =732356943548