2518615domain: NAppears in sequencesNumbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 69.at n=22A031747G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * (1 + x^n*A(x))^n / (1 + x^(n+1)*A(x))^(n+1).at n=17A354124