13456978719domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(313).at n=19A041590The x member of the positive proper fundamental solution (x = x2(n), y = y2(n)) of the second class for the Pell equation x^2 - D(n)*y^2 = +8 for odd D(n) = A263012(n).at n=13A264351