a(n) = Sum_{d|n, d==1 (mod 4)} d^11 - Sum_{d|n, d==3 (mod 4)} d^11.

A321827

a(n) = Sum_{d|n, d==1 (mod 4)} d^11 - Sum_{d|n, d==3 (mod 4)} d^11.

Terms

    a(0) =1a(1) =1a(2) =-177146a(3) =1a(4) =48828126a(5) =-177146a(6) =-1977326742a(7) =1a(8) =31380882463a(9) =48828126a(10) =-285311670610a(11) =-177146a(13) =-1977326742a(15) =1a(17) =31380882463a(19) =48828126a(21) =-285311670610

External references