1936881

Appears in sequences

• a(n) = Sum_{k=0..n} binomial(n,k)*binomial(2*k,k).at n=10A026375
• a(n) = T(n,[ n/2 ]), where T is the array in A026374.at n=19A026380
• Self-convolution of array T given by A026374.at n=10A026946
• Triangle read by rows: T(n,k) (0<=k<=floor(n/2)) is the number of Delannoy paths of length n, having k ED's.at n=30A110221