194210domain: NAppears in sequencesG.f. A(x) satisfies A(x) = 1 + Sum_{n>=1} A(x)^n * 2*x^(2*n-1)/(1 - 2*x^(2*n-1)).at n=9A192402Number of tieless quidditch games with n scoring events.at n=19A335974Numbers k so that the binary expansion of 3^k starts with the binary expansion of k.at n=24A385157