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.

A231214 Number of (n+1)X(3+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..2 introduced in row major order.

Table of values

n a(n)
1 7
2 22
3 93
4 408
5 1793
6 7844
7 34609
8 152421
9 672446
10 2965705
11 13084976
12 57727896
13 254711179
14 1123832479
15 4958718969
16 21879386505
17 96539467026
18 425965183425
19 1879509395614
20 8293059346003
21 36591936428964
22 161456668184975

List of values

[7, 22, 93, 408, 1793, 7844, 34609, 152421, 672446, 2965705, 13084976, 57727896, 254711179, 1123832479, 4958718969, 21879386505, 96539467026, 425965183425, 1879509395614, 8293059346003, 36591936428964, 161456668184975]