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.

A293999 Number of linear chord diagrams having n chords and no chord length larger than seven.

Table of values

n a(n)
0 1
1 1
2 3
3 15
4 105
5 945
6 10395
7 135135
8 675675
9 3790647
10 23694083
11 162961399
12 1209395171
13 9332799283
14 70178707279
15 474578729935
16 3181796735723
17 21683288205723
18 150990425051331
19 1069361164106091
20 7617764489275535
21 53863160510249543
22 375786310609620379

List of values

[1, 1, 3, 15, 105, 945, 10395, 135135, 675675, 3790647, 23694083, 162961399, 1209395171, 9332799283, 70178707279, 474578729935, 3181796735723, 21683288205723, 150990425051331, 1069361164106091, 7617764489275535, 53863160510249543, 375786310609620379]

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

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