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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.

A249762 Number of tilings of a 5 X n rectangle using n pentominoes of shapes F, I, L.

Table of values

n a(n)
0 1
1 1
2 3
3 5
4 13
5 50
6 133
7 360
8 875
9 2254
10 6336
11 17331
12 47199
13 124476
14 330344
15 889454
16 2400961
17 6485476
18 17392906
19 46616158
20 125153478
21 336529923
22 905611165
23 2434088873
24 6539233985
25 17567977887
26 47214493386
27 126927551197
28 341177175540
29 916960655233

List of values

[1, 1, 3, 5, 13, 50, 133, 360, 875, 2254, 6336, 17331, 47199, 124476, 330344, 889454, 2400961, 6485476, 17392906, 46616158, 125153478, 336529923, 905611165, 2434088873, 6539233985, 17567977887, 47214493386, 126927551197, 341177175540, 916960655233]

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

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