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.

A332421 The number of regions inside a nonagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

Table of values

n a(n)
1 154
2 2754
3 16858
4 55098
5 142318
6 298350
7 568162
8 975294
9 1585666
10 2426292
11 3588508
12 5093604
13 7067422
14 9523746
15 12612214
16 16351218
17 20924029
18 26326026
19 32789107
20 40289238
21 49093282
22 59181228
23 70852528

List of values

[154, 2754, 16858, 55098, 142318, 298350, 568162, 975294, 1585666, 2426292, 3588508, 5093604, 7067422, 9523746, 12612214, 16351218, 20924029, 26326026, 32789107, 40289238, 49093282, 59181228, 70852528]

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

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