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.

A222289 Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order.

Table of values

n a(n)
1 5
2 144
3 1427
4 40321
5 564838
6 17801910
7 262048125
8 8550246097
9 129184703815
10 4294346570524
11 66002018148195
12 2218403489369930
13 34478463977532598
14 1167416501197133512
15 18284642742630658357
16 622321211264493492467

List of values

[5, 144, 1427, 40321, 564838, 17801910, 262048125, 8550246097, 129184703815, 4294346570524, 66002018148195, 2218403489369930, 34478463977532598, 1167416501197133512, 18284642742630658357, 622321211264493492467]

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

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