107979domain: NAppears in sequencesa(n)=4n^4-3n^3+2n^2-n+1.at n=13A131465Number 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, 0, 0)}.at n=10A149919