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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.

A370889 Expansion of e.g.f. (1/x) * Series_Reversion( x/(1 + x*exp(x^2/2)) ).

Table of values

n a(n)
0 1
1 1
2 2
3 9
4 72
5 735
6 9000
7 133035
8 2325120
9 46631025
10 1053108000
11 26484495345
12 734652737280
13 22280390827695
14 733335188826240
15 26035824337798275
16 991872319953715200
17 40360728513989909025
18 1747119524427614937600
19 80166580022376802179225

List of values

[1, 1, 2, 9, 72, 735, 9000, 133035, 2325120, 46631025, 1053108000, 26484495345, 734652737280, 22280390827695, 733335188826240, 26035824337798275, 991872319953715200, 40360728513989909025, 1747119524427614937600, 80166580022376802179225]

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

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