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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.

A295239 Expansion of e.g.f. 2/(1 + sqrt(1 + 4*x*exp(x))).

Table of values

n a(n)
0 1
1 -1
2 2
3 -9
4 68
5 -705
6 9234
7 -146209
8 2717000
9 -57986433
10 1397949830
11 -37576332321
12 1114326129564
13 -36141571087297
14 1272713716466906
15 -48360394499269665
16 1972269941821097744
17 -85929979225787811585
18 3983422470176606823054
19 -195765982110500512129057

List of values

[1, -1, 2, -9, 68, -705, 9234, -146209, 2717000, -57986433, 1397949830, -37576332321, 1114326129564, -36141571087297, 1272713716466906, -48360394499269665, 1972269941821097744, -85929979225787811585, 3983422470176606823054, -195765982110500512129057]

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

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