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.

A207419 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 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 9
11 14
12 81
13 92
14 81
15 14
16 21
17 196
18 241
19 241
20 196
21 21
22 31
23 441
24 720
25 742
26 720
27 441
28 31
29 46
30 961
31 1889
32 2760
33 2760
34 1889
35 961
36 46
37 68
38 2116
39 4719
40 8465
41 13260
42 8465
43 4719
44 2116
45 68
46 100
47 4624
48 12102
49 24317
50 50139
51 50139
52 24317
53 12102

List of values

[2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 14, 81, 92, 81, 14, 21, 196, 241, 241, 196, 21, 31, 441, 720, 742, 720, 441, 31, 46, 961, 1889, 2760, 2760, 1889, 961, 46, 68, 2116, 4719, 8465, 13260, 8465, 4719, 2116, 68, 100, 4624, 12102, 24317, 50139, 50139, 24317, 12102]