4732755885domain: NAppears in sequencesNumerators of even raw moments in the distribution of a triangle picked at random from points on the circumference of a unit circle.at n=8A093585a(n) = Sum_{k = 0..n-1} (-1)^k*binomial(n,k)^2*binomial(n-1,k).at n=16A361716a(n) = (1/2) * (3*n)! / n!^3 for n > 0, a(0) = 1.at n=8A386876