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.

A279264 Number of nX4 0..1 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 2
2 20
3 86
4 400
5 1592
6 5888
7 21882
8 79112
9 281754
10 991292
11 3452756
12 11929580
13 40936072
14 139644508
15 473965068
16 1601601800
17 5391122062
18 18084715096
19 60480149694
20 201706042464
21 671036424848
22 2227380695220
23 7378205313096

List of values

[2, 20, 86, 400, 1592, 5888, 21882, 79112, 281754, 991292, 3452756, 11929580, 40936072, 139644508, 473965068, 1601601800, 5391122062, 18084715096, 60480149694, 201706042464, 671036424848, 2227380695220, 7378205313096]