Numerator of sum of -7th powers of divisors of n.

Terms

a(0) =1a(1) =129a(2) =2188a(3) =16513a(4) =78126a(5) =23521a(6) =823544a(7) =2113665a(8) =4785157a(9) =5039127a(10) =19487172a(11) =9032611a(12) =62748518a(13) =13279647a(14) =56979896a(15) =270549121a(16) =410338674a(17) =205761751a(18) =893871740a(19) =645047319a(20) =1801914272a(21) =628461297a(22) =3404825448a(23) =385391585a(24) =6103593751a(25) =4047279411a(26) =10465138360a(27) =34691791