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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.

A352431 Number T(n,k) of tilings of a 2k X n rectangle using dominoes and 2 X 2 tiles.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 3
9 1
10 1
11 1
12 11
13 5
14 1
15 1
16 1
17 43
18 29
19 11
20 1
21 1
22 1
23 171
24 173
25 165
26 21
27 1
28 1
29 1
30 683
31 1037
32 2773
33 593
34 43
35 1
36 1
37 1
38 2731
39 6221
40 48605
41 17937
42 2773
43 85
44 1
45 1
46 1
47 10923
48 37325
49 864901
50 550969
51 205879
52 11093
53 171
54 1

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 11, 5, 1, 1, 1, 43, 29, 11, 1, 1, 1, 171, 173, 165, 21, 1, 1, 1, 683, 1037, 2773, 593, 43, 1, 1, 1, 2731, 6221, 48605, 17937, 2773, 85, 1, 1, 1, 10923, 37325, 864901, 550969, 205879, 11093, 171, 1]