3119140625

Appears in sequences

• a(n) = ((5+sqrt(5))/2)^n + ((5-sqrt(5))/2)^n.at n=17A020876
• Binomial transform of Fibonacci(2n-1) (A001519).at n=18A093129
• Expansion of ((1+x)^4-(1+x)x^3)/((1+x)^5-x^5).at n=37A105370