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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.

A360631 Number of sets of integer-sided rectangular pieces that can tile a 2 X n rectangle.

Table of values

n a(n)
0 1
1 2
2 4
3 10
4 22
5 44
6 91
7 172
8 326
9 595
10 1066
11 1849
12 3204
13 5365
14 8921
15 14581
16 23558
17 37440
18 59127
19 91957
20 142060
21 217015
22 328939
23 493917
24 737249
25 1090432
26 1603439
27 2341094
28 3398313
29 4900740
30 7032809
31 10031010
32 14241165
33 20112575
34 28276657
35 39566635
36 55140425
37 76499692
38 105731884
39 145550924

List of values

[1, 2, 4, 10, 22, 44, 91, 172, 326, 595, 1066, 1849, 3204, 5365, 8921, 14581, 23558, 37440, 59127, 91957, 142060, 217015, 328939, 493917, 737249, 1090432, 1603439, 2341094, 3398313, 4900740, 7032809, 10031010, 14241165, 20112575, 28276657, 39566635, 55140425, 76499692, 105731884, 145550924]

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

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