12030821domain: NAppears in sequencesNumbers that are the sum of 2 positive 9th powers.at n=19A003391Numbers that are the sum of at most 2 positive 9th powers.at n=26A004886Centered cube numbers: a(n) = (n+1)^9 + n^9.at n=5A036087a(n) = 5^n + 6^n.at n=9A074615Numbers which are the sums of consecutive ninth powers.at n=17A217849