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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.

A199672 Denominators of upper rational approximants of Pi with the first 5 terms given by Adam Adamandy Kochański in 1685, continued using a reconstruction by Fukś that is highly likely to match Kochański's incompletely published method.

Table of values

n a(n)
1 7
2 113
3 530875
4 2945825376
5 43524569930401
6 1466647432944722498
7 89572558672233037120355
8 9963334846229825184971327361
9 1155607355474812503904084375292947
10 200867670528631909428607946113420047541
11 113152173559177341323595142380773440920653498
12 68570782937729264728805274258460609065120623055491

List of values

[7, 113, 530875, 2945825376, 43524569930401, 1466647432944722498, 89572558672233037120355, 9963334846229825184971327361, 1155607355474812503904084375292947, 200867670528631909428607946113420047541, 113152173559177341323595142380773440920653498, 68570782937729264728805274258460609065120623055491]

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

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