cp's OEIS Frontend

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.

A084480 Number of tilings of a 4 X 2n rectangle with L tetrominoes.

Table of values

n a(n)
0 1
1 2
2 10
3 42
4 182
5 790
6 3432
7 14914
8 64814
9 281680
10 1224182
11 5320310
12 23122148
13 100489226
14 436727814
15 1898026232
16 8248853134
17 35849651070
18 155803171860
19 677123141810
20 2942788286798
21 12789406189672
22 55582969192486
23 241564496305670
24 1049843265359828

List of values

[1, 2, 10, 42, 182, 790, 3432, 14914, 64814, 281680, 1224182, 5320310, 23122148, 100489226, 436727814, 1898026232, 8248853134, 35849651070, 155803171860, 677123141810, 2942788286798, 12789406189672, 55582969192486, 241564496305670, 1049843265359828]

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

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