24274domain: NAppears in sequencesNumbers k such that the continued fraction for sqrt(k) has period 69.at n=24A020408G.f. satisfies: A(x/A(x)) = G(x) where G(x) = 1 + x*G(x)^2 is the g.f. of A000108 (Catalan numbers).at n=7A154677The smallest positive even integer that can be represented with n digits in base 3/2.at n=22A305498