4874688

Appears in sequences

• Square table where T(n,k) = binomial(n*(n+k), k) * n/(n+k), for n>=1, k>=0, as read by antidiagonals.at n=59A299427
• a(n) = binomial((n+1)*(2*n+1), n) * (n+1)/(2*n+1).at n=5A299428