608761domain: NAppears in sequencesa(n) = 3*a(n-1) + a(n-2), with a(1)=1 and a(2)=4.at n=11A003688Fixed-j dispersion for Q = 13: array D(g,h) (g, h >= 1), read by ascending antidiagonals.at n=41A120862x-values in the solution to 13*x^2 - 12 = y^2.at n=11A199404