Expansion of Product_{k>=1} 1/(1 - x^k)^(k*(k+1)*(5*k-2)/6).

Terms

a(0) =1a(1) =1a(2) =9a(3) =35a(4) =131a(5) =454a(6) =1601a(7) =5325a(8) =17467a(9) =55588a(10) =173858a(11) =532809a(12) =1607056a(13) =4769263a(14) =13957660a(15) =40302923a(16) =114962909a(17) =324157109a(18) =904247056a(19) =2496917319a(20) =6829241131a(21) =18510038697a(22) =49741367504a(23) =132582175873a(24) =350655140642a(25) =920568519505