9107509824

Appears in sequences

• a(n) = 7*a(n-1) - a(n-2) + 4, with a(0) = 0, a(1) = 5.at n=12A003482
• a(n) = F(n)*F(n-1) if n odd otherwise F(n)*F(n-1)-1, where F = Fibonacci numbers A000045.at n=25A059840
• a(n) = F(3)*F(n)*F(n+1) + F(4)*F(n+1)^2 - F(4) if n even, F(3)*F(n)*F(n+1) + F(4)*F(n+1)^2 if n odd, where F(n) is the n-th Fibonacci number (A000045).at n=23A080143
• Numerator of Sum_{k=1..n} 1/(Fibonacci(k)*Fibonacci(k+2)).at n=23A119996
• a(n) = F(n)^2 - F(n-1)^2 or F(n+1) * F(n-2) where F(n) = A000045(n), the Fibonacci numbers.at n=25A226205