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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.

A296320 T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 neighboring 1.

Table of values

n a(n)
1 1
2 2
3 2
4 3
5 6
6 3
7 4
8 11
9 11
10 4
11 6
12 27
13 32
14 27
15 6
16 9
17 60
18 96
19 96
20 60
21 9
22 13
23 132
24 295
25 434
26 295
27 132
28 13
29 19
30 301
31 902
32 1970
33 1970
34 902
35 301
36 19
37 28
38 669
39 2747
40 8470
41 12547
42 8470
43 2747
44 669
45 28
46 41
47 1502
48 8380
49 37431
50 77426
51 77426
52 37431
53 8380
54 1502
55 41
56 60
57 3370
58 25577

List of values

[1, 2, 2, 3, 6, 3, 4, 11, 11, 4, 6, 27, 32, 27, 6, 9, 60, 96, 96, 60, 9, 13, 132, 295, 434, 295, 132, 13, 19, 301, 902, 1970, 1970, 902, 301, 19, 28, 669, 2747, 8470, 12547, 8470, 2747, 669, 28, 41, 1502, 8380, 37431, 77426, 77426, 37431, 8380, 1502, 41, 60, 3370, 25577]

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

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