Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^(k^4).

Terms

a(0) =1a(1) =16a(2) =81a(3) =376a(4) =625a(5) =2592a(6) =2401a(7) =8752a(8) =9801a(9) =20000a(10) =14641a(11) =71928a(12) =28561a(13) =76832a(14) =101250a(15) =196252a(16) =83521a(17) =366768a(18) =130321a(19) =555000a(20) =388962a(21) =468512a(22) =279841a(23) =1859760a(24) =585625a(25) =913952a(26) =1148202a(27) =2132088a(28) =707281a(29) =4050000