4206145

Appears in sequences

• An inverse Chebyshev transform of the Fibonacci numbers.at n=20A100095
• a(n) = 5^n*Sum_{ k=0..n } binomial(2*k,k)/5^k.at n=9A144635
• Expansion of d/dx log(1/(1-x/sqrt(1-4*x^2))).at n=18A189053