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.

A296676 Expansion of e.g.f. 1/(1 - arctanh(x)).

Table of values

n a(n)
0 1
1 1
2 2
3 8
4 40
5 264
6 2048
7 18864
8 196992
9 2330112
10 30519552
11 440998656
12 6940852224
13 118501542912
14 2177222879232
15 42886017982464
16 900748014944256
17 20107190510714880
18 475167358873239552
19 11854636521914695680
20 311291779253770911744
21 8583598112533040332800
22 247944624171011289907200

List of values

[1, 1, 2, 8, 40, 264, 2048, 18864, 196992, 2330112, 30519552, 440998656, 6940852224, 118501542912, 2177222879232, 42886017982464, 900748014944256, 20107190510714880, 475167358873239552, 11854636521914695680, 311291779253770911744, 8583598112533040332800, 247944624171011289907200]

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

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