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.

A233168 T(n,k)=Number of nXk 0..7 arrays with no element x(i,j) adjacent to itself or value 7-x(i,j) horizontally, diagonally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 4 5 and 6, 2 appearing before 3 4 and 5, and 3 appearing before 4 in row major order (unlabeled 8-colorings with no clashing color pairs).

Table of values

n a(n)
1 1
2 1
3 1
4 3
5 1
6 3
7 11
8 8
9 8
10 11
11 48
12 64
13 96
14 64
15 48
16 236
17 512
18 1280
19 1280
20 512
21 236
22 1248
23 4096
24 18432
25 28672
26 18432
27 4096
28 1248
29 6896
30 32768
31 278528
32 720896
33 720896
34 278528
35 32768
36 6896
37 39168
38 262144
39 4325376
40 19922944
41 31457280
42 19922944
43 4325376

List of values

[1, 1, 1, 3, 1, 3, 11, 8, 8, 11, 48, 64, 96, 64, 48, 236, 512, 1280, 1280, 512, 236, 1248, 4096, 18432, 28672, 18432, 4096, 1248, 6896, 32768, 278528, 720896, 720896, 278528, 32768, 6896, 39168, 262144, 4325376, 19922944, 31457280, 19922944, 4325376]

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

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