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.

A260841 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101.

Table of values

n a(n)
1 48
2 82
3 82
4 188
5 131
6 188
7 364
8 288
9 288
10 364
11 644
12 496
13 700
14 496
15 644
16 1320
17 796
18 1224
19 1224
20 796
21 1320
22 2584
23 1645
24 1560
25 2235
26 1560
27 1645
28 2584
29 4842
30 2976
31 3470
32 2590
33 2590
34 3470
35 2976
36 4842
37 9412
38 4890
39 6908
40 6232
41 3828
42 6232
43 6908
44 4890
45 9412
46 18210

List of values

[48, 82, 82, 188, 131, 188, 364, 288, 288, 364, 644, 496, 700, 496, 644, 1320, 796, 1224, 1224, 796, 1320, 2584, 1645, 1560, 2235, 1560, 1645, 2584, 4842, 2976, 3470, 2590, 2590, 3470, 2976, 4842, 9412, 4890, 6908, 6232, 3828, 6232, 6908, 4890, 9412, 18210]