8166487

Appears in sequences

• a(n) = Sum_{k=0..floor(2*n/3)} binomial(k+2,2) * binomial(k,2*n-3*k).at n=30A392269
• a(n) = Sum_{k=0..n} binomial(k+2,2) * binomial(k,3*n-3*k).at n=20A392313