2430547domain: NAppears in sequencesNumbers k that divide 9^k + 5^k.at n=15A045598a(n) = (9^n + 5^n)/2.at n=7A081338Fifth row of number array A084061.at n=7A084096Numbers z such that x^2 + y^7 = z^2 (with positive integers x and y) and gcd(x, y, z) = 1.at n=22A293693