1953130domain: NAppears in sequencesSums of two distinct powers of 5.at n=37A038474a(n) = 5^n + 5.at n=9A178676a(n) = n^9 + n.at n=5A196290Expansion of Sum_{k>=0} x^(5^k) / (1 - 5*x^(5^k)).at n=9A373281a(n) = n*sigma_8(n).at n=5A386751