195793domain: NAppears in sequencesDenominators of continued fraction convergents to sqrt(777).at n=8A042499Number 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, 0), (0, 0, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.at n=9A150609