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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.

A195625 Denominators a(n) of Pythagorean approximations b(n)/a(n) to sqrt(1/2).

Table of values

n a(n)
1 1
2 4
3 756
4 435
5 7480
6 1760400
7 178342500
8 107770201
9 77071637784
10 85438755160
11 162402622743
12 150321171634588
13 314779738565193
14 1395140327976600
15 3899078438579384
16 26320772661145332
17 506075333191877232
18 6916169937061302541

List of values

[1, 4, 756, 435, 7480, 1760400, 178342500, 107770201, 77071637784, 85438755160, 162402622743, 150321171634588, 314779738565193, 1395140327976600, 3899078438579384, 26320772661145332, 506075333191877232, 6916169937061302541]

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

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