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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.

A380080 Expansion of e.g.f. (1/x) * Series_Reversion( x / sqrt(1 + 2*x*exp(x)) ).

Table of values

n a(n)
0 1
1 1
2 3
3 15
4 109
5 1045
6 12501
7 179599
8 3015657
9 57988809
10 1257058585
11 30337358491
12 806837271021
13 23448335293981
14 739379851041573
15 25143044445680295
16 917252832237053521
17 35735484803144976145
18 1480838869407287923569
19 65038486139094829172275
20 3017945328547452509505045

List of values

[1, 1, 3, 15, 109, 1045, 12501, 179599, 3015657, 57988809, 1257058585, 30337358491, 806837271021, 23448335293981, 739379851041573, 25143044445680295, 917252832237053521, 35735484803144976145, 1480838869407287923569, 65038486139094829172275, 3017945328547452509505045]

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

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