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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.

A367143 Number of simple graphs on n unlabeled vertices without isolated or universal vertices.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 3
5 12
6 88
7 732
8 10258
9 249976
10 11455832
11 994987528
12 163053176864
13 50171849022768
14 28953151594499584
15 31368377658489837792
16 63938162732587949277392
17 245807862122123877567929920
18 1787085853417304634682510751296
19 24634234097674713300981911735051072

List of values

[1, 0, 0, 0, 3, 12, 88, 732, 10258, 249976, 11455832, 994987528, 163053176864, 50171849022768, 28953151594499584, 31368377658489837792, 63938162732587949277392, 245807862122123877567929920, 1787085853417304634682510751296, 24634234097674713300981911735051072]

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

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