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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.

A370926 Expansion of e.g.f. (1/x) * Series_Reversion( x/(1 + x*exp(x^3/6)) ).

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 28
5 220
6 2520
7 34510
8 519680
9 8527680
10 154831600
11 3151456000
12 71830281600
13 1809141934600
14 49559087177600
15 1459865188782000
16 45970426027926400
17 1543274016213529600
18 55120521154277779200
19 2088917638216953544000
20 83717918489664018560000

List of values

[1, 1, 2, 6, 28, 220, 2520, 34510, 519680, 8527680, 154831600, 3151456000, 71830281600, 1809141934600, 49559087177600, 1459865188782000, 45970426027926400, 1543274016213529600, 55120521154277779200, 2088917638216953544000, 83717918489664018560000]

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

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