94637domain: NAppears in sequencesNumbers that are the sum of 3 positive 7th powers.at n=27A003370a(n) = 2^n + 4^n + 5^n.at n=7A074532Number of n X 3 binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing.at n=17A266423