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.

A233201 Number of nX7 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 1248
2 2098176
3 5496242176
4 15635845218304
5 46111939268444160
6 138127371171167993856
7 416547612309880393695232
8 1259808519497450508966166528
9 3814894993577338604838516162560

List of values

[1248, 2098176, 5496242176, 15635845218304, 46111939268444160, 138127371171167993856, 416547612309880393695232, 1259808519497450508966166528, 3814894993577338604838516162560]

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

Content is available under The OEIS End-User License Agreement.