a(n) = Sum_{d|n} (-1)^(d-1)*d^12.

A321551

a(n) = Sum_{d|n} (-1)^(d-1)*d^12.

Terms

    a(0) =1a(1) =-4095a(2) =531442a(3) =-16781311a(4) =244140626a(5) =-2176254990a(6) =13841287202a(7) =-68736258047a(8) =282430067923a(9) =-999755863470

External references