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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.

A335258 Denominators of expansion of arctanh(tan(x)) (odd powers only).

Table of values

n a(n)
1 1
2 3
3 3
4 315
5 567
6 155925
7 93555
8 638512875
9 127702575
10 1856156927625
11 7795859096025
12 49308808782358125
13 56894779364259375
14 1298054391195577640625
15 95646113035463615625
16 122529844256906551386796875
17 47570410123269602303109375
18 2405873491984360136479756640625

List of values

[1, 3, 3, 315, 567, 155925, 93555, 638512875, 127702575, 1856156927625, 7795859096025, 49308808782358125, 56894779364259375, 1298054391195577640625, 95646113035463615625, 122529844256906551386796875, 47570410123269602303109375, 2405873491984360136479756640625]

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

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