342328320

Appears in sequences

• a(n) = 2^n*binomial(3*n,n)*(3*n+2).at n=7A072976
• a(n) = x(n) * 2^((n mod 2 - 1)/2), with x(n)=Sum(x(k)*x(n-k-1):0<=k<n), x(0)=SQRT(2).at n=14A137697