102714domain: NAppears in sequencesDistinct even numbers in writing first numerator and then denominator of each element of the 1/4-Pascal triangle (by row).at n=22A046589T(2n+5,n), array T as in A055794.at n=13A055798G.f. satisfies: A(x) = sqrt(1 + 2*x*A(x)^4 + 3*x^2*A(x)^6).at n=7A222050a(n) = 3*(9*n - 1)*(3*n - 2).at n=36A277985