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.

A231413 Number of (n+1) X (1+1) 0..2 arrays with no element equal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

Table of values

n a(n)
1 9
2 50
3 285
4 1617
5 9188
6 52193
7 296511
8 1684466
9 9569425
10 54363701
11 308839124
12 1754508933
13 9967330587
14 56624207962
15 321681006005
16 1827463435305
17 10381783646596
18 58978707645369
19 335056872107879
20 1903451466275938

List of values

[9, 50, 285, 1617, 9188, 52193, 296511, 1684466, 9569425, 54363701, 308839124, 1754508933, 9967330587, 56624207962, 321681006005, 1827463435305, 10381783646596, 58978707645369, 335056872107879, 1903451466275938]