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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.

A323871 Number of aperiodic toroidal necklaces of size n whose entries cover an initial interval of positive integers.

Table of values

n a(n)
1 1
2 2
3 8
4 53
5 216
6 3112
7 13512
8 272844
9 2362412
10 40898808
11 295024104
12 14045779864
13 81055130520
14 3040383692328
15 61408850927280
16 1661142087743940
17 15337737297545400
18 1128511554416582908
19 9768588138876674856
20 803306338873264137240
21 15452347618762680730384

List of values

[1, 2, 8, 53, 216, 3112, 13512, 272844, 2362412, 40898808, 295024104, 14045779864, 81055130520, 3040383692328, 61408850927280, 1661142087743940, 15337737297545400, 1128511554416582908, 9768588138876674856, 803306338873264137240, 15452347618762680730384]

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

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