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

Terms

a(0) =1a(1) =1a(2) =6a(3) =18a(4) =55a(5) =150a(6) =424a(7) =1113a(8) =2923a(9) =7401a(10) =18510a(11) =45271a(12) =109297a(13) =259447a(14) =608428a(15) =1407958a(16) =3222132a(17) =7292198a(18) =16340830a(19) =36265672a(20) =79775931a(21) =173999194a(22) =376497975a(23) =808471181a(24) =1723592762a(25) =3649271887a(26) =7675809680a(27) =16043777217a(28) =33332888108a(29) =68853608216