52558domain: NAppears in sequencesa(n) = T(n,[ n/2 ]), where T is the array in A026148.at n=15A026162Number 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, 1, -1), (1, -1, 0), (1, 0, 1)}.at n=12A148122Row sums of the Lambda triangle A160487.at n=2A160489