2791106585

Appears in sequences

• Diagonal sums of the triangle A190152.at n=20A190154
• a(n) = Sum_{k=0..floor(n/2)} binomial(n+4*k,n-2*k).at n=20A373904
• Expansion of (1 - x - x^3)/((1 - x - x^3)^2 - 4*x^4).at n=30A375279
• a(n) = Sum_{k=0..floor(2*n/3)} binomial(4*n-4*k,2*k).at n=15A375308
• a(n) = Sum_{k=0..floor(n/2)} binomial(4*k,n-2*k).at n=30A375314