Numbers k such that sigma(k) mod k = antisigma(k) mod k, where sigma(k) = A000203(k) = sum of divisors of k, antisigma(k) = A024816(k) = sum of non-divisors of k.

A229088

Numbers k such that sigma(k) mod k = antisigma(k) mod k, where sigma(k) = A000203(k) = sum of divisors of k, antisigma(k) = A024816(k) = sum of non-divisors of k.

Terms

    a(0) =1a(1) =4a(2) =40a(3) =224a(4) =360a(5) =2016a(6) =47616a(7) =174592a(8) =293760a(9) =524160a(10) =1571328a(11) =1782144a(12) =3485664a(13) =134209536a(14) =282977280a(15) =492101632a(16) =746444160a(17) =1459956960a(18) =1684126080a(19) =1716728832a(20) =4428914688a(21) =27298252800a(22) =41233360896a(23) =376591138560a(24) =719045268480

External references