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.

A233197 Number of n X 3 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 (unlabelled 8-colorings with no clashing color pairs).

Table of values

n a(n)
1 3
2 36
3 1440
4 62720
5 2779136
6 123551744
7 5496242176
8 244533166080
9 10879798083584
10 484067845865472
11 21537343823413248
12 958248525617954816
13 42634797465737363456
14 1896925413514655301632
15 84398806858761213313024

List of values

[3, 36, 1440, 62720, 2779136, 123551744, 5496242176, 244533166080, 10879798083584, 484067845865472, 21537343823413248, 958248525617954816, 42634797465737363456, 1896925413514655301632, 84398806858761213313024]

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

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