10262004

Appears in sequences

• a(n) = T(2n,n), T given by A026648.at n=12A026649
• a(n) = T(n,[ n/2 ]), T given by A026648.at n=24A026654
• a(n) = Sum_{k=0..n} n^(n-k) * binomial(2*k,k) * binomial(2*n,2*k).at n=6A337388