68187domain: NAppears in sequencesNumbers k such that k^2 contains only digits {4,6,9}.at n=10A053960Number 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, 1, 0), (0, 0, 1), (1, 0, -1), (1, 0, 0)}.at n=9A150094