112102domain: NAppears in sequencesNumbers n such that n | 9^n + 7^n + 5^n + 3^n.at n=31A063455Solutions to a certain congruence.at n=14A275880G.f.: A(x) = exp( Sum_{n>=1} x^n/n * (1 + x^n*A(x)^(2*n)) / (1 + x^n*A(x)^n) ).at n=16A307231