137922domain: NAppears in sequencesTriangle of Gaussian binomial coefficients [ n,k ] for q = 19.at n=12A022183Number 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), (0, 1, -1), (0, 1, 0), (1, 0, 0)}.at n=11A149822