540192

Appears in sequences

• Expansion of power series whose square is the weight enumerator of [48,23,8] Rao-Reddy code (A031137).at n=6A108179
• a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^(n-3*k) * binomial(2*k+2,2*n-6*k+1).at n=29A387557