293377domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(573).at n=7A042098a(n) = 2048*n^2 - 128*n + 1.at n=11A157448Number of nondecreasing sequences of 5 1..n integers with no element dividing the sequence sum.at n=33A212872Numbers k such that sigma((k + 1) / 2) is a prime q.at n=23A292446