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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.

A295767 G.f. A(x) satisfies: A(x + A(x)*A(-x)) = x - A(x)*A(-x).

Table of values

n a(n)
1 1
2 2
3 4
4 18
5 76
6 500
7 2888
8 23018
9 160556
10 1449996
11 11575640
12 114832932
13 1019757080
14 10926139752
15 106088136208
16 1215141302498
17 12753198909052
18 155094128725196
19 1745058840478104
20 22420718376535948
21 268759075046461512
22 3634051693946151736
23 46176378783947578800
24 655022571579520952068
25 8785797027703008422264
26 130388708648538590304216
27 1839515449214236524003120

List of values

[1, 2, 4, 18, 76, 500, 2888, 23018, 160556, 1449996, 11575640, 114832932, 1019757080, 10926139752, 106088136208, 1215141302498, 12753198909052, 155094128725196, 1745058840478104, 22420718376535948, 268759075046461512, 3634051693946151736, 46176378783947578800, 655022571579520952068, 8785797027703008422264, 130388708648538590304216, 1839515449214236524003120]

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

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