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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.

A295238 Expansion of e.g.f. 2/(1 + sqrt(1 - 4*x*exp(x))).

Table of values

n a(n)
0 1
1 1
2 6
3 57
4 796
5 14785
6 344046
7 9640225
8 316255416
9 11896233345
10 504918768250
11 23874754106401
12 1244712973780068
13 70940791877082049
14 4388291507415513894
15 292823509879910802465
16 20966854494419642792176
17 1603540841320336494905089
18 130464295561360336835272050

List of values

[1, 1, 6, 57, 796, 14785, 344046, 9640225, 316255416, 11896233345, 504918768250, 23874754106401, 1244712973780068, 70940791877082049, 4388291507415513894, 292823509879910802465, 20966854494419642792176, 1603540841320336494905089, 130464295561360336835272050]

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

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