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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.

A074655 Number of Lyndon words (aperiodic necklaces) with 3n beads of 3 colors, n beads of each color.

Table of values

n a(n)
0 1
1 2
2 14
3 186
4 2880
5 50450
6 952854
7 19003474
8 394394880
9 8439756660
10 185033201150
11 4137181680698
12 94020326259264
13 2166105078791446
14 50489825369325118
15 1188777328563863850
16 28236363841594782720
17 675879582290807439794
18 16289254212695836475436

List of values

[1, 2, 14, 186, 2880, 50450, 952854, 19003474, 394394880, 8439756660, 185033201150, 4137181680698, 94020326259264, 2166105078791446, 50489825369325118, 1188777328563863850, 28236363841594782720, 675879582290807439794, 16289254212695836475436]

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

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