84082domain: NAppears in sequencesNumber of line segments in regular n-gon with all diagonals drawn.at n=33A135565Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (0, 1, -1), (1, -1, 1), (1, 0, 0)}.at n=11A148250