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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.

A297582 T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 4 neighboring 1s.

Table of values

n a(n)
1 1
2 2
3 1
4 3
5 5
6 1
7 4
8 11
9 9
10 1
11 6
12 17
13 36
14 20
15 1
16 9
17 39
18 72
19 102
20 41
21 1
22 13
23 93
24 188
25 254
26 370
27 85
28 1
29 19
30 183
31 688
32 1017
33 1104
34 1243
35 178
36 1
37 28
38 373
39 2085
40 5263
41 5800
42 4428
43 3854
44 369
45 1
46 41
47 823
48 5497
49 20771
50 47968
51 31171
52 17549
53 13078
54 769
55 1
56 60
57 1741
58 16037
59 76340

List of values

[1, 2, 1, 3, 5, 1, 4, 11, 9, 1, 6, 17, 36, 20, 1, 9, 39, 72, 102, 41, 1, 13, 93, 188, 254, 370, 85, 1, 19, 183, 688, 1017, 1104, 1243, 178, 1, 28, 373, 2085, 5263, 5800, 4428, 3854, 369, 1, 41, 823, 5497, 20771, 47968, 31171, 17549, 13078, 769, 1, 60, 1741, 16037, 76340]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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