359634domain: NAppears in sequencesNumber 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, -1), (-1, -1, 1), (-1, 1, -1), (1, 0, 0), (1, 0, 1)}.at n=11A149872Number of ways to arrange 3 nonattacking knights on the lower triangle of an n X n board.at n=15A194487