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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.

A385501 Expansion of e.g.f. (1/x) * Series_Reversion( x * exp(-arctanh(x)) ).

Table of values

n a(n)
0 1
1 1
2 3
3 18
4 165
5 2040
6 31815
7 599760
8 13268745
9 337115520
10 9674678475
11 309554784000
12 10927053262125
13 421849524096000
14 17682153623909775
15 799730490214656000
16 38820939579369572625
17 2013202580708487168000
18 111081054630965602057875
19 6497703571257963896832000

List of values

[1, 1, 3, 18, 165, 2040, 31815, 599760, 13268745, 337115520, 9674678475, 309554784000, 10927053262125, 421849524096000, 17682153623909775, 799730490214656000, 38820939579369572625, 2013202580708487168000, 111081054630965602057875, 6497703571257963896832000]

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

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