Expansion of Product_{k>0} (1 - x^k)^(k*3).

Terms

a(0) =1a(1) =-3a(2) =-3a(3) =8a(4) =12a(5) =9a(6) =-29a(7) =-54a(8) =-51a(9) =8a(10) =168a(11) =273a(12) =270a(13) =-18a(14) =-546a(15) =-1220a(16) =-1539a(17) =-969a(18) =796a(19) =3693a(20) =6591a(21) =8098a(22) =5412a(23) =-2568a(24) =-16053a(25) =-31524a(26) =-42195a(27) =-38684a(28) =-11868a(29) =41994