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

Terms

a(0) =1a(1) =1a(2) =32a(3) =275a(4) =1267a(5) =11925a(6) =51445a(7) =406183a(8) =1406614a(9) =14690040a(10) =51144366a(11) =251885088a(12) =1481359033a(13) =5108404955a(14) =42614629915a(15) =158222158038a(16) =588574803125