-39088169

Appears in sequences

• a(n+2) = -a(n+1) + a(n) (signed Fibonacci numbers) with a(-2) = a(-1) = 1; or Fibonacci numbers (A000045) extended to negative indices.at n=40A039834
• An inverse Catalan transform of Fibonacci(2n).at n=37A100334
• An inverse Catalan transform of Fibonacci(2n).at n=38A100334
• Expansion of (x-1)*(x+1) / (8*x^2 + 1 - 3*x + x^4 - 3*x^3).at n=18A108196
• Binomial transform of 1, 1, 0, -1, -1 (periodically continued).at n=36A138003
• a(n) = F(n) * (-1)^(n*(n-1)/2) where F(n) = A000045(n) Fibonacci numbers.at n=38A333378