318636032

Appears in sequences

• a(n) = binomial(n+10, 10)*4^n.at n=7A172978
• a(n) = (1/n!) * (5*n)!/(5*n/2)! * (3*n/2)!/(3*n)!.at n=7A262732
• a(n) = 4^n * A000108(n+1).at n=8A269796