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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.

A089433 Number of noncrossing connected graphs on n nodes having exactly two interior faces.

Table of values

n a(n)
4 2
5 30
6 315
7 2856
8 23940
9 191268
10 1480050
11 11196900
12 83304936
13 611931320
14 4450217772
15 32104210320
16 230080173960
17 1639890119016
18 11634355574100
19 82216112723640
20 579022013389050
21 4065827626164150
22 28475852003986695

List of values

[2, 30, 315, 2856, 23940, 191268, 1480050, 11196900, 83304936, 611931320, 4450217772, 32104210320, 230080173960, 1639890119016, 11634355574100, 82216112723640, 579022013389050, 4065827626164150, 28475852003986695]

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

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