139105

Appears in sequences

• a(n) = Sum_{k=0..n} Fibonacci(k) + (-1)^k*Fibonacci(k-1).at n=24A097132
• a(n) = 3*Fibonacci(n) + (-1)^n.at n=24A097133
• a(n) = 3*Fibonacci(2*n) + 1.at n=12A097136
• a(0)=1, a(1)=4, a(n) = a(n-1) + a(n-2) - 1.at n=24A187893