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.

A241108 T(n,k)=Number of nXk 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 4
6 2
7 4
8 11
9 11
10 4
11 8
12 36
13 58
14 36
15 8
16 16
17 116
18 294
19 294
20 116
21 16
22 32
23 376
24 1522
25 2436
26 1522
27 376
28 32
29 64
30 1216
31 7846
32 19814
33 19814
34 7846
35 1216
36 64
37 128
38 3936
39 40418
40 162776
41 259388
42 162776
43 40418
44 3936
45 128
46 256
47 12736
48 208374
49 1333934
50 3374086

List of values

[1, 1, 1, 2, 4, 2, 4, 11, 11, 4, 8, 36, 58, 36, 8, 16, 116, 294, 294, 116, 16, 32, 376, 1522, 2436, 1522, 376, 32, 64, 1216, 7846, 19814, 19814, 7846, 1216, 64, 128, 3936, 40418, 162776, 259388, 162776, 40418, 3936, 128, 256, 12736, 208374, 1333934, 3374086]