238281250

Appears in sequences

• a(n) = ((5+sqrt(5))/2)^n + ((5-sqrt(5))/2)^n.at n=15A020876
• Binomial transform of Fibonacci(2n-1) (A001519).at n=16A093129
• Expansion of ((1+x)^3 - x^3)/((1+x)^5 - x^5).at n=31A105369