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.

A233196 Number of n X 2 0..7 arrays with no element x(i,j) adjacent to itself or value 7-x(i,j) horizontally, 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 3
3 36
4 528
5 8256
6 131328
7 2098176
8 33558528
9 536887296
10 8590000128
11 137439215616
12 2199024304128
13 35184376283136
14 562949970198528
15 9007199321849856
16 144115188344291328
17 2305843010287435776

List of values

[1, 3, 36, 528, 8256, 131328, 2098176, 33558528, 536887296, 8590000128, 137439215616, 2199024304128, 35184376283136, 562949970198528, 9007199321849856, 144115188344291328, 2305843010287435776]

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

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