4971631domain: NAppears in sequencesDenominators of continued fraction convergents to sqrt(538).at n=9A042029Number 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), (0, 1, -1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.at n=11A150632