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

Terms

a(0) =1a(1) =1a(2) =8a(3) =35a(4) =91a(5) =405a(6) =1069a(7) =3799a(8) =8686a(9) =36744a(10) =86310a(11) =235776a(12) =686329a(13) =1605779a(14) =5230579a(15) =13191702a(16) =30608501a(17) =73907925a(18) =206052723a(19) =433747560a(20) =1324608945a(21) =2995740974a(22) =6973434054a(23) =15364943439a(24) =35816669079a(25) =86662644756a(26) =184871083828a(27) =502089539734