Sum of the 7th powers of the divisor complements of the odd proper divisors of n.

Terms

a(0) =0a(1) =128a(2) =2187a(3) =16384a(4) =78125a(5) =280064a(6) =823543a(7) =2097152a(8) =4785156a(9) =10000128a(10) =19487171a(11) =35848192a(12) =62748517a(13) =105413632a(14) =170939687a(15) =268435456a(16) =410338673a(17) =612500096a(18) =893871739a(19) =1280016384a(20) =1801914271a(21) =2494358016a(22) =3404825447a(23) =4588568576a(24) =6103593750a(25) =8031810304a(26) =10465138359