cp's OEIS Frontend

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.

A229232 Number of undirected circular permutations pi(1), ..., pi(n) of 1, ..., n with the n numbers pi(1)*pi(2)-1, pi(2)*pi(3)-1, ..., pi(n-1)*pi(n)-1, pi(n)*pi(1)-1 all prime.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 0
6 2
7 1
8 2
9 2
10 8
11 2
12 241
13 0
14 693
15 376
16 7687
17 1082
18 127563
19 25113
20 1353842
21 559649

List of values

[0, 0, 0, 1, 0, 2, 1, 2, 2, 8, 2, 241, 0, 693, 376, 7687, 1082, 127563, 25113, 1353842, 559649]

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

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