1924065

Appears in sequences

• a(n) = 13*binomial(2n,n-6)/(n+7).at n=8A000590
• 9th column of Catalan triangle A009766.at n=12A124087
• a(n) = (n-1)*binomial(3*n-2,n)/(2*n-1) + (n+1)*binomial(3*n,n)/(2*n+1) - binomial(3*n-1,n).at n=10A262717