50786domain: NAppears in sequencesGaps of 10 in sequence A038593 (upper terms).at n=22A038660Indices of square numbers that are also 18-gonal numbers.at n=7A160970Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero.at n=10A304540