a(n) = n^9 * Sum_{p|n, p prime} 1/p^9.

Terms

a(0) =0a(1) =1a(2) =1a(3) =512a(4) =1a(5) =20195a(6) =1a(7) =262144a(8) =19683a(9) =1953637a(10) =1a(11) =10339840a(12) =1a(13) =40354119a(14) =1972808a(15) =134217728a(16) =1a(17) =397498185a(18) =1a(19) =1000262144a(20) =40373290a(21) =2357948203a(22) =1a(23) =5293998080a(24) =1953125a(25) =10604499885a(26) =387420489a(27) =20661308928a(28) =1a(29) =39453437071