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.

A231131 T(n,k) = Number of (n+1) X (k+1) white-square subarrays of 0..2 arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

Table of values

n a(n)
1 1
2 2
3 2
4 6
5 8
6 6
7 16
8 40
9 40
10 16
11 44
12 176
13 308
14 176
15 44
16 120
17 808
18 2260
19 2260
20 808
21 120
22 328
23 3584
24 16812
25 27664
26 16812
27 3584
28 328
29 896
30 16368
31 124644
32 336004
33 336004
34 124644
35 16368
36 896
37 2448
38 72640
39 924900
40 4150352
41 6794904
42 4150352
43 924900
44 72640
45 2448

List of values

[1, 2, 2, 6, 8, 6, 16, 40, 40, 16, 44, 176, 308, 176, 44, 120, 808, 2260, 2260, 808, 120, 328, 3584, 16812, 27664, 16812, 3584, 328, 896, 16368, 124644, 336004, 336004, 124644, 16368, 896, 2448, 72640, 924900, 4150352, 6794904, 4150352, 924900, 72640, 2448]