495884domain: NAppears in sequencesT(2n+1,n+3), T given by A026747.at n=8A026867Number 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, 0), (0, 1, 0), (1, 0, -1), (1, 0, 0)}.at n=11A149923