3037000499domain: NAppears in sequencesPowers of sqrt(8) rounded down.at n=21A017928Integers n such that n^2 + k is a Mersenne number 2^m - 1 for some k such that n < k < 2 * n and m odd.at n=15A144934Integer part of square root of A010809(n) = n^21.at n=8A242038