51322domain: NAppears in sequences"BGK" (reversible, element, unlabeled) transform of 2,2,2,2,...at n=17A032061Numbers m such that m divides Sum_{k = 1..m} A000005(k).at n=15A050226Least m such that the average number of divisors of all integers from 1 to m equals n, or 0 if no such number exists.at n=10A085567