798210domain: 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, 0, 1), (0, -1, 1), (0, 1, 0), (1, 0, 0)}.at n=11A150047Number of 4-cycles in the n X n rook graph.at n=20A288962