Sum of 7th powers of odd divisors of n.

Terms

a(0) =1a(1) =1a(2) =2188a(3) =1a(4) =78126a(5) =2188a(6) =823544a(7) =1a(8) =4785157a(9) =78126a(10) =19487172a(11) =2188a(12) =62748518a(13) =823544a(14) =170939688a(15) =1a(16) =410338674a(17) =4785157a(18) =893871740a(19) =78126a(20) =1801914272a(21) =19487172a(22) =3404825448a(23) =2188a(24) =6103593751a(25) =62748518a(26) =10465138360a(27) =823544a(28) =17249876310