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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.

A206871 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 horizontally and 1 0 1 vertically.

Table of values

n a(n)
1 2
2 4
3 4
4 7
5 16
6 7
7 13
8 49
9 49
10 12
11 24
12 169
13 211
14 144
15 21
16 44
17 576
18 1153
19 889
20 441
21 37
22 81
23 1936
24 6139
25 7675
26 3967
27 1369
28 65
29 149
30 6561
31 31529
32 63866
33 55063
34 17737
35 4225
36 114
37 274
38 22201
39 165783
40 502864
41 728935
42 397221
43 78799
44 12996
45 200
46 504
47 75076
48 867545

List of values

[2, 4, 4, 7, 16, 7, 13, 49, 49, 12, 24, 169, 211, 144, 21, 44, 576, 1153, 889, 441, 37, 81, 1936, 6139, 7675, 3967, 1369, 65, 149, 6561, 31529, 63866, 55063, 17737, 4225, 114, 274, 22201, 165783, 502864, 728935, 397221, 78799, 12996, 200, 504, 75076, 867545]

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

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