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.

A060050 Number of irreducible nonpositively curved triangulations of an n-gon: All internal vertices have at valence at least 6 and no diagonals of the n-gon are allowed.

Table of values

n a(n)
2 0
3 1
4 0
5 0
6 1
7 1
8 5
9 13
10 46
11 155
12 561
13 2068
14 7871
15 30586
16 121391
17 490196
18 2011422
19 8370698
20 35285987
21 150485667
22 648653910
23 2823402675
24 12400659846
25 54920758496
26 245126368841
27 1101983749921
28 4987538210079
29 22716326086134

List of values

[0, 1, 0, 0, 1, 1, 5, 13, 46, 155, 561, 2068, 7871, 30586, 121391, 490196, 2011422, 8370698, 35285987, 150485667, 648653910, 2823402675, 12400659846, 54920758496, 245126368841, 1101983749921, 4987538210079, 22716326086134]

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

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