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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.

A371020 Expansion of e.g.f. (1/x) * Series_Reversion( x/(1 + x^2/2*exp(x)) ).

Table of values

n a(n)
0 1
1 0
2 1
3 3
4 18
5 160
6 1545
7 19131
8 273868
9 4463460
10 82561545
11 1695986875
12 38413504866
13 951203750718
14 25551218851249
15 740338919242755
16 23014265170565880
17 764047265130952456
18 26981593786255568913
19 1009915667787285212787
20 39938889756657408019390

List of values

[1, 0, 1, 3, 18, 160, 1545, 19131, 273868, 4463460, 82561545, 1695986875, 38413504866, 951203750718, 25551218851249, 740338919242755, 23014265170565880, 764047265130952456, 26981593786255568913, 1009915667787285212787, 39938889756657408019390]

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

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