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.

A207879 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 1 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 9
11 13
12 81
13 72
14 81
15 13
16 19
17 169
18 164
19 164
20 169
21 19
22 28
23 361
24 336
25 400
26 336
27 361
28 28
29 41
30 784
31 702
32 824
33 824
34 702
35 784
36 41
37 60
38 1681
39 1488
40 1940
41 1648
42 1940
43 1488
44 1681
45 60
46 88
47 3600
48 3164
49 4200
50 4160
51 4160
52 4200
53 3164
54 3600
55 88
56 129

List of values

[2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 13, 81, 72, 81, 13, 19, 169, 164, 164, 169, 19, 28, 361, 336, 400, 336, 361, 28, 41, 784, 702, 824, 824, 702, 784, 41, 60, 1681, 1488, 1940, 1648, 1940, 1488, 1681, 60, 88, 3600, 3164, 4200, 4160, 4160, 4200, 3164, 3600, 88, 129]