64088domain: 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), (0, 0, 1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.at n=8A151088a(n) = Sum_{k=0..n} ceiling(phi^k), where phi is the golden ratio (A001622).at n=21A279100