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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.

A303410 T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 0
2 1
3 0
4 1
5 3
6 0
7 2
8 7
9 10
10 0
11 3
12 10
13 28
14 23
15 0
16 5
17 27
18 42
19 119
20 61
21 0
22 8
23 45
24 100
25 168
26 541
27 162
28 0
29 13
30 98
31 290
32 547
33 902
34 2327
35 421
36 0
37 21
38 193
39 730
40 2079
41 4013
42 3256
43 10384
44 1103
45 0
46 34
47 379
48 1700
49 6322
50 29411
51 21361
52 15852
53 47491
54 2890
55 0
56 55
57 778
58 4246
59 17903

List of values

[0, 1, 0, 1, 3, 0, 2, 7, 10, 0, 3, 10, 28, 23, 0, 5, 27, 42, 119, 61, 0, 8, 45, 100, 168, 541, 162, 0, 13, 98, 290, 547, 902, 2327, 421, 0, 21, 193, 730, 2079, 4013, 3256, 10384, 1103, 0, 34, 379, 1700, 6322, 29411, 21361, 15852, 47491, 2890, 0, 55, 778, 4246, 17903]