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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.

A195562 Denominators a(n) of Pythagorean approximations b(n)/a(n) to 1/4.

Table of values

n a(n)
1 1
2 24
3 40
4 63
5 1600
6 2624
7 4161
8 105560
9 173160
10 274559
11 6965376
12 11425920
13 18116737
14 459609240
15 753937576
16 1195430079
17 30327244480
18 49748454080
19 78880268481
20 2001138526424
21 3282644031720
22 5204902289663
23 132044815499520

List of values

[1, 24, 40, 63, 1600, 2624, 4161, 105560, 173160, 274559, 6965376, 11425920, 18116737, 459609240, 753937576, 1195430079, 30327244480, 49748454080, 78880268481, 2001138526424, 3282644031720, 5204902289663, 132044815499520]