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.

A163261 Numerators of fractions in the approximation of the square root of 2 by means of: f(n)= 3f(n-1)/(f(n-1)^2+1); with f(1)= 1.

Table of values

n a(n)
1 1
2 3
3 18
4 702
5 1038258
6 2292015792222
7 11135478955084481409955218
8 263108590829588406010634295716681354685770554450302

List of values

[1, 3, 18, 702, 1038258, 2292015792222, 11135478955084481409955218, 263108590829588406010634295716681354685770554450302]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.