111170677domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumerator of Sum_{i=1..n} 1/C(2*i,i).at n=14A112097Numerators of 2*Sum_{k=1..n} 1/binomial(2*k,k), n >= 1.at n=13A130545Prime numbersat n=6366437