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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.

A340027 Number of inequivalent vertex colorings of connected graphs on n unlabeled vertices.

Table of values

n a(n)
0 1
1 1
2 2
3 7
4 50
5 520
6 10665
7 400220
8 29204589
9 4143245857
10 1146827743079
11 619412332805088
12 653237982066620540
13 1346571060160843394520
14 5432476352054378478159877
15 42947950068987980977264834190
16 666212968663987333085874313873428
17 20301440661023158546856805172595805762

List of values

[1, 1, 2, 7, 50, 520, 10665, 400220, 29204589, 4143245857, 1146827743079, 619412332805088, 653237982066620540, 1346571060160843394520, 5432476352054378478159877, 42947950068987980977264834190, 666212968663987333085874313873428, 20301440661023158546856805172595805762]

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

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