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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.

A322330 Number of 3-colored connected graphs on n labeled nodes up to permutation of the colors.

Table of values

n a(n)
3 4
4 84
5 2470
6 108390
7 7192444
8 726782784
9 112795368970
10 27132558531330
11 10196751602156944
12 6022337098348167564
13 5612248139616665602510
14 8274349264629020203315230
15 19333678744046195877906230404
16 71675537050405087142116150917624
17 421915518251999125756688245906168690

List of values

[4, 84, 2470, 108390, 7192444, 726782784, 112795368970, 27132558531330, 10196751602156944, 6022337098348167564, 5612248139616665602510, 8274349264629020203315230, 19333678744046195877906230404, 71675537050405087142116150917624, 421915518251999125756688245906168690]

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

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