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.

A060049 Triangulations of an n-gon such that each internal vertex has valence at least 6, i.e., nonpositively curved triangulations.

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 2
5 5
6 15
7 50
8 181
9 697
10 2821
11 11892
12 51874
13 232974
14 1073070
15 5053029
16 24264565
17 118570292
18 588567257
19 2963358162
20 15114174106
21 78004013763
22 406971280545
23 2144659072330
24 11407141925639
25 61197287846831

List of values

[1, 0, 1, 1, 2, 5, 15, 50, 181, 697, 2821, 11892, 51874, 232974, 1073070, 5053029, 24264565, 118570292, 588567257, 2963358162, 15114174106, 78004013763, 406971280545, 2144659072330, 11407141925639, 61197287846831]

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

Content is available under The OEIS End-User License Agreement.