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.

A198717 Number of n X 2 0..6 arrays with values 0..6 introduced in row major order and no element equal to any horizontal or vertical neighbor.

Table of values

n a(n)
1 1
2 4
3 34
4 499
5 10507
6 272410
7 7817980
8 234638905
9 7176366133
10 221220625936
11 6841771033846
12 211886983790431
13 6565800345745279
14 203504808219690982
15 6308194354577750032
16 195548116214389189477
17 6061914804816147034345

List of values

[1, 4, 34, 499, 10507, 272410, 7817980, 234638905, 7176366133, 221220625936, 6841771033846, 211886983790431, 6565800345745279, 203504808219690982, 6308194354577750032, 195548116214389189477, 6061914804816147034345]

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

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