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.

A239537 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.

Table of values

n a(n)
1 1
2 2
3 1
4 6
5 2
6 6
7 16
8 6
9 24
10 13
11 44
12 16
13 216
14 68
15 47
16 120
17 44
18 1536
19 1014
20 406
21 128
22 328
23 120
24 11616
25 11108
26 13254
27 1584
28 405
29 896
30 328
31 86400
32 131988
33 293741
34 98304
35 7790
36 1181
37 2448
38 896
39 645504
40 1533792
41 7199001
42 3785280
43 984150
44 33630
45 3598
46 6688
47 2448

List of values

[1, 2, 1, 6, 2, 6, 16, 6, 24, 13, 44, 16, 216, 68, 47, 120, 44, 1536, 1014, 406, 128, 328, 120, 11616, 11108, 13254, 1584, 405, 896, 328, 86400, 131988, 293741, 98304, 7790, 1181, 2448, 896, 645504, 1533792, 7199001, 3785280, 984150, 33630, 3598, 6688, 2448]