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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.

A247443 Number of tilings of a 5 X n rectangle using n pentominoes of shapes F, L, Y.

Table of values

n a(n)
0 1
1 0
2 2
3 0
4 6
5 16
6 32
7 104
8 186
9 800
10 1700
11 4836
12 11186
13 29940
14 84388
15 208808
16 563364
17 1391664
18 3787510
19 9824684
20 25712276
21 66815444
22 173151378
23 457266220
24 1188536784
25 3113743272
26 8087358736
27 21152284376
28 55283003950
29 144314582896
30 376852311434
31 982507243820

List of values

[1, 0, 2, 0, 6, 16, 32, 104, 186, 800, 1700, 4836, 11186, 29940, 84388, 208808, 563364, 1391664, 3787510, 9824684, 25712276, 66815444, 173151378, 457266220, 1188536784, 3113743272, 8087358736, 21152284376, 55283003950, 144314582896, 376852311434, 982507243820]

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

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