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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.

A263709 Number of length n arrays of permutations of 0..n-1 with each element moved by -n to n places and every four consecutive elements having its maximum within 4 of its minimum.

Table of values

n a(n)
1 1
2 2
3 6
4 24
5 120
6 144
7 108
8 108
9 144
10 240
11 384
12 616
13 960
14 1376
15 2048
16 3008
17 4488
18 6816
19 10184
20 15344
21 23016

List of values

[1, 2, 6, 24, 120, 144, 108, 108, 144, 240, 384, 616, 960, 1376, 2048, 3008, 4488, 6816, 10184, 15344, 23016]

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

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