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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.

A323870 Number of toroidal necklaces of size n whose entries cover an initial interval of positive integers.

Table of values

n a(n)
1 1
2 4
3 10
4 61
5 218
6 3136
7 13514
8 272998
9 2362439
10 40899248
11 295024106
12 14045787790
13 81055130522
14 3040383719360
15 61408850927732
16 1661142088494553
17 15337737297545402
18 1128511554421317128
19 9768588138876674858
20 803306338873366385030
21 15452347618762680757428

List of values

[1, 4, 10, 61, 218, 3136, 13514, 272998, 2362439, 40899248, 295024106, 14045787790, 81055130522, 3040383719360, 61408850927732, 1661142088494553, 15337737297545402, 1128511554421317128, 9768588138876674858, 803306338873366385030, 15452347618762680757428]

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

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