17824950

Appears in sequences

• Triangle, read by rows, of numbers T(n,k), 0 <= k <= n, given by T(n,k) = A000364(n-k)*binomial(2*n, 2*k).at n=40A086646
• a(n) = Euler(2*n)*binomial(4*n,2*n).at n=4A214445
• a(n) = binomial(2*n, n)*2^n*|Euler(n, 1/2) - Euler(n, 0)|.at n=8A343846