365059domain: NAppears in sequencesBinomial transform of (3n)!.at n=3A064571Number 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, 0, -1), (0, 1, 0), (1, -1, 1)}.at n=12A148384