192131domain: NAppears in sequencesNumbers k such that the period of the continued fraction for sqrt(k) contains exactly 91 ones.at n=11A031859Number 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, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, 1)}.at n=8A151248