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.

A207918 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically.

Table of values

n a(n)
1 2
2 4
3 4
4 6
5 16
6 6
7 9
8 36
9 36
10 10
11 13
12 81
13 98
14 100
15 16
16 19
17 169
18 271
19 358
20 256
21 26
22 28
23 361
24 665
25 1309
26 1152
27 676
28 42
29 41
30 784
31 1675
32 4181
33 5371
34 3910
35 1764
36 68
37 60
38 1681
39 4344
40 13759
41 21145
42 23637
43 12994
44 4624
45 110
46 88
47 3600
48 11081
49 46800
50 86255
51 117835

List of values

[2, 4, 4, 6, 16, 6, 9, 36, 36, 10, 13, 81, 98, 100, 16, 19, 169, 271, 358, 256, 26, 28, 361, 665, 1309, 1152, 676, 42, 41, 784, 1675, 4181, 5371, 3910, 1764, 68, 60, 1681, 4344, 13759, 21145, 23637, 12994, 4624, 110, 88, 3600, 11081, 46800, 86255, 117835]

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

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