a(n) = n^5 * Sum_{p|n, p prime} 1/p^5.

Terms

a(0) =0a(1) =1a(2) =1a(3) =32a(4) =1a(5) =275a(6) =1a(7) =1024a(8) =243a(9) =3157a(10) =1a(11) =8800a(12) =1a(13) =16839a(14) =3368a(15) =32768a(16) =1a(17) =66825a(18) =1a(19) =101024a(20) =17050a(21) =161083a(22) =1a(23) =281600a(24) =3125a(25) =371325a(26) =59049a(27) =538848a(28) =1a(29) =867151