cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A096487 Largest term in periodic part of continued fraction expansion of square root of n-th repunit.

Original entry on oeis.org

2, 6, 20, 66, 210, 666, 2108, 6666, 21080, 66666, 210818, 666666, 2108184, 6666666, 21081850, 66666666, 210818510, 666666666, 2108185106, 6666666666, 21081851066, 66666666666, 210818510676, 666666666666, 2108185106778
Offset: 2

Views

Author

Labos Elemer, Jun 25 2004

Keywords

Crossrefs

Cf. A096483.

Programs

  • Mathematica
    Do[Print[Max[ContinuedFraction[((-1+10^n)/9)^(1/2)]]], {n, 2, 18}]

Formula

a(n) = 2*A096483(n).

Extensions

More terms from Michel Marcus, Aug 26 2019