530606domain: NAppears in sequencesNumber of base 30 n-digit numbers with adjacent digits differing by one or less.at n=10A126384Number 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, 0), (0, 0, -1), (0, 1, 0), (1, -1, 1)}.at n=12A148408