2868341

Appears in sequences

• Number of Twopins positions.at n=37A005689
• Diagonal sums of the triangle A190152.at n=14A190154
• a(n) = Sum_{k=0..floor(n/2)} binomial(n+4*k,n-2*k).at n=14A373904
• Expansion of (1 - x - x^3)/((1 - x - x^3)^2 - 4*x^4).at n=21A375279