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.

A293998 Number of linear chord diagrams having n chords and no chord length larger than six.

Table of values

n a(n)
0 1
1 1
2 3
3 15
4 105
5 945
6 10395
7 45045
8 222951
9 1245257
10 7689707
11 50548041
12 328681355
13 1898148921
14 10938090235
15 64447508901
16 388656309623
17 2372510073525
18 14406809496311
19 86092382481933
20 512757617989667
21 3064484085534721
22 18400499270245971
23 110741448251269561

List of values

[1, 1, 3, 15, 105, 945, 10395, 45045, 222951, 1245257, 7689707, 50548041, 328681355, 1898148921, 10938090235, 64447508901, 388656309623, 2372510073525, 14406809496311, 86092382481933, 512757617989667, 3064484085534721, 18400499270245971, 110741448251269561]

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

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