166363540200domain: NAppears in sequencesDenominator of Sum_{k = 0..n} 1/((k+1)*(2*k+1)).at n=14A111876Denominator of rational part of raw moment n of the line point picking problem.at n=30A115389Denominators of 2*Sum_{k=1..n} 1/binomial(2*k,k), n >= 1.at n=14A130546Denominator of Sum_{1<=j<=k<=n, gcd(j,k)=1} 1/(j*k).at n=30A365228