1307448domain: NAppears in sequencesT(2n+6,n), array T as in A050186; a count of aperiodic binary words.at n=9A051199G.f.: Sum_{n=-oo..+oo} x^(n^2) * C(x)^(6*n-9), where C(x) = 1 + x*C(x)^2 is the g.f. of the Catalan numbers (A000108).at n=31A356779