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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.

A374512 Number of ways to tile a 3 X n board with 2 X 2 and 3 X 3 staircase tiles.

Table of values

n a(n)
0 1
1 0
2 2
3 4
4 6
5 16
6 32
7 64
8 140
9 288
10 600
11 1264
12 2632
13 5504
14 11520
15 24064
16 50320
17 105216
18 219936
19 459840
20 961376
21 2009856
22 4201984
23 8784896
24 18366144
25 38397440
26 80275840
27 167829248
28 350873728
29 733556736
30 1533616128
31 3206266880
32 6703206656
33 14014111744

List of values

[1, 0, 2, 4, 6, 16, 32, 64, 140, 288, 600, 1264, 2632, 5504, 11520, 24064, 50320, 105216, 219936, 459840, 961376, 2009856, 4201984, 8784896, 18366144, 38397440, 80275840, 167829248, 350873728, 733556736, 1533616128, 3206266880, 6703206656, 14014111744]

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

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