10339840domain: NAppears in sequencesNumbers that are the sum of 2 positive 9th powers.at n=18A003391Numbers that are the sum of at most 2 positive 9th powers.at n=25A004886a(n) = 4^n + 6^n.at n=9A074612a(n) = n^9 * Sum_{p|n, p prime} 1/p^9.at n=11A351249