582556domain: NAppears in sequencesNumber of fixed points in all 132- and 213-avoiding permutations of {1,2,...,n} (these are permutations with runs consisting of consecutive integers).at n=21A068018G.f. satisfies A(x) = 1 + x*A(x)^2/(1 - x^3*A(x)^4).at n=12A365247