255405domain: 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, 0), (-1, 0, 1), (0, 1, 0), (1, -1, -1), (1, 0, 1)}.at n=10A150010Expansion of (1/x) * Series_Reversion( x * (1 - x^3 * (1 + x)^3) / (1 + x) ).at n=12A389441