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.

A229082 Number of circular permutations i_0, i_1, ..., i_n of 0, 1, ..., n such that all the n+1 numbers i_0^2+i_1, i_1^2+i_2, ..., i_{n-1}^2+i_n, i_n^2+i_0 are of the form (p-1)/2 with p an odd prime.

Table of values

n a(n)
1 1
2 1
3 1
4 0
5 2
6 3
7 7
8 11
9 9
10 5
11 41
12 82
13 254
14 2412
15 9524
16 13925
17 85318
18 220818
19 1662421
20 10496784
21 20690118
22 97200566
23 460358077

List of values

[1, 1, 1, 0, 2, 3, 7, 11, 9, 5, 41, 82, 254, 2412, 9524, 13925, 85318, 220818, 1662421, 10496784, 20690118, 97200566, 460358077]

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

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