2149991423

Appears in sequences

• a(n) = Fibonacci(n+2)^2 - 1.at n=22A080097
• a(n) = F(4)*F(n)*F(n+1) + F(5)*F(n+1)^2 if n odd, a(n) = F(4)*F(n)*F(n+1) + F(5)*F(n+1)^2 - F(5) if n even, where F(n) is the n-th Fibonacci number (A000045).at n=21A080144
• a(n)= 3*a(n-1) -3*a(n-3) +a(n-4), n>6.at n=25A107840
• Golden Triangle sums: a(n) = a(n-1) + A001654(n+1) with a(0)=0.at n=22A180664
• Constant term in the reduction by (x^2 -> x + 1) of the polynomial F(n+3)*x^n, where F = A000045 (Fibonacci sequence).at n=23A192883
• Coefficient of x in the reduction by (x^2 -> x+1) of the polynomial F(n+4)*x^n, where F = A000045 (Fibonacci sequence).at n=22A192920