232576domain: NAppears in sequencesNumber of symmetric 4 X 4 matrices of nonnegative integers with every row and column adding to n.at n=14A053493Number 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, 0, 0), (1, 1, 1)}.at n=9A150771