From: Asymptotic behavior of reciprocal sum of two products of Fibonacci numbers
n | \((\sum^{\infty}_{k=n}\frac {1}{f_{k}f_{k+4}} )^{-1}\) | \(g_{n,2}\) | n | \((\sum^{\infty}_{k=n}\frac {1}{f_{k}f_{k+4}} )^{-1}\) | \(g_{n,2}\) |
---|---|---|---|---|---|
3 | 15.6521… | 15.6666 | 4 | 39.3277… | 39.3333 |
5 | 104.6645… | 104.6666 | 6 | 272.3325… | 272.3333 |
7 | 714.6663… | 714.6666 | 8 | 1869.3332… | 1869.3333 |
9 | 4895.6666… | 4895.6666 | 10 | 12,815.3333… | 12,815.3333 |