a(n) = Sum_{d|n, d==1 mod 4} d^10 - Sum_{d|n, d==3 mod 4} d^10.

A321826

a(n) = Sum_{d|n, d==1 mod 4} d^10 - Sum_{d|n, d==3 mod 4} d^10.

Terms

    a(0) =1a(1) =1a(2) =-59048a(3) =1a(4) =9765626a(5) =-59048a(6) =-282475248a(7) =1a(8) =3486725353a(9) =9765626a(10) =-25937424600a(11) =-59048a(12) =137858491850a(13) =-282475248a(14) =-576640684048a(15) =1a(17) =3486725353a(19) =9765626a(21) =-25937424600a(23) =-59048a(25) =137858491850

External references