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.

A268750 T(n,k)=Number of nXk binary arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.

Table of values

n a(n)
1 2
2 4
3 4
4 7
5 11
6 7
7 13
8 32
9 32
10 13
11 23
12 89
13 143
14 89
15 23
16 41
17 244
18 623
19 623
20 244
21 41
22 72
23 659
24 2615
25 4110
26 2615
27 659
28 72
29 126
30 1760
31 10830
32 26334
33 26334
34 10830
35 1760
36 126
37 219
38 4657
39 44067
40 165019
41 255651
42 165019
43 44067
44 4657
45 219
46 379
47 12228
48 177429
49 1016807

List of values

[2, 4, 4, 7, 11, 7, 13, 32, 32, 13, 23, 89, 143, 89, 23, 41, 244, 623, 623, 244, 41, 72, 659, 2615, 4110, 2615, 659, 72, 126, 1760, 10830, 26334, 26334, 10830, 1760, 126, 219, 4657, 44067, 165019, 255651, 165019, 44067, 4657, 219, 379, 12228, 177429, 1016807]