a(n) = n^10 * Sum_{d^2|n} 1 / d^10.

Terms

a(0) =1a(1) =1024a(2) =59049a(3) =1049600a(4) =9765625a(5) =60466176a(6) =282475249a(7) =1074790400a(8) =3486843450a(9) =10000000000a(10) =25937424601a(11) =61977830400a(12) =137858491849a(13) =289254654976a(14) =576650390625