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.

A293193 a(n) = n! * [x^n] exp(n*arctanh(x)).

Table of values

n a(n)
0 1
1 1
2 4
3 33
4 384
5 5745
6 105120
7 2273985
8 56770560
9 1606455585
10 50810457600
11 1776342038625
12 68018227200000
13 2831056111508625
14 127263741276672000
15 6144722994699914625
16 317153340121153536000
17 17425813179911850338625
18 1015487574490836615168000
19 62559446107077837491198625

List of values

[1, 1, 4, 33, 384, 5745, 105120, 2273985, 56770560, 1606455585, 50810457600, 1776342038625, 68018227200000, 2831056111508625, 127263741276672000, 6144722994699914625, 317153340121153536000, 17425813179911850338625, 1015487574490836615168000, 62559446107077837491198625]

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

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