a(n) = n^8 * Sum_{p|n, p prime} 1/p^8.

Terms

a(0) =0a(1) =1a(2) =1a(3) =256a(4) =1a(5) =6817a(6) =1a(7) =65536a(8) =6561a(9) =390881a(10) =1a(11) =1745152a(12) =1a(13) =5765057a(14) =397186a(15) =16777216a(16) =1a(17) =44726337a(18) =1a(19) =100065536a(20) =5771362a(21) =214359137a(22) =1a(23) =446758912a(24) =390625a(25) =815730977a(26) =43046721a(27) =1475854592a(28) =1a(29) =2664570241