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.

A003447 Number of nonequivalent dissections of an n-gon into n-3 polygons by nonintersecting diagonals rooted at a cell up to rotation and reflection.

Table of values

n a(n)
4 1
5 2
6 7
7 26
8 108
9 434
10 1765
11 7086
12 28384
13 113092
14 449582
15 1783092
16 7062611
17 27944394
18 110494113
19 436699670
20 1725474562
21 6816591452
22 26927828642
23 106375090796
24 420248084468
25 1660408588852
26 6561147261682
27 25930381015756
28 102496390643352
29 405212762977544

List of values

[1, 2, 7, 26, 108, 434, 1765, 7086, 28384, 113092, 449582, 1783092, 7062611, 27944394, 110494113, 436699670, 1725474562, 6816591452, 26927828642, 106375090796, 420248084468, 1660408588852, 6561147261682, 25930381015756, 102496390643352, 405212762977544]

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

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