154735domain: NAppears in sequencesNumber of 2 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.at n=33A224000Number of nonequivalent (mod D_8) ways to place 3 points on an n X n point grid so that no point is equally distant from two other points on the same row or the same column.at n=13A296996