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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.

A345448 Number of tilings of a 2 X n rectangle with dominoes and long L-shaped 4-minoes.

Table of values

n a(n)
0 1
1 1
2 2
3 7
4 15
5 32
6 79
7 185
8 422
9 987
10 2307
11 5352
12 12451
13 29005
14 67478
15 156991
16 365391
17 850304
18 1978615
19 4604465
20 10715078
21 24934611
22 58024779
23 135028632
24 314222011
25 731218981
26 1701605078
27 3959769367
28 9214694391
29 21443322032
30 49900304047
31 116121942377

List of values

[1, 1, 2, 7, 15, 32, 79, 185, 422, 987, 2307, 5352, 12451, 29005, 67478, 156991, 365391, 850304, 1978615, 4604465, 10715078, 24934611, 58024779, 135028632, 314222011, 731218981, 1701605078, 3959769367, 9214694391, 21443322032, 49900304047, 116121942377]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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