176689domain: NAppears in sequencesStrong pseudoprimes to base 47.at n=35A020273Strong pseudoprimes to base 53.at n=35A020279Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (1, -1, 1), (1, 0, 0), (1, 0, 1), (1, 1, -1)}.at n=9A150519