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.

A338122 Place three points evenly spaced around a circle, draw n evenly spaced rays from each of the points, a(n) is the number of regions thus created. See Comments for details.

Table of values

n a(n)
1 1
2 6
3 10
4 18
5 31
6 30
7 58
8 60
9 73
10 90
11 118
12 72
13 160
14 168
15 187
16 204
17 262
18 240
19 325
20 306
21 358
22 396
23 457
24 324
25 535
26 546
27 580
28 594
29 709
30 666
31 808
32 780
33 859
34 918
35 1012
36 780
37 1126
38 1140
39 1189
40 1212
41 1372
42 1308
43 1507
44 1458
45 1576
46 1656
47 1783
48 1464
49 1933
50 1950
51 2014
52 2034

List of values

[1, 6, 10, 18, 31, 30, 58, 60, 73, 90, 118, 72, 160, 168, 187, 204, 262, 240, 325, 306, 358, 396, 457, 324, 535, 546, 580, 594, 709, 666, 808, 780, 859, 918, 1012, 780, 1126, 1140, 1189, 1212, 1372, 1308, 1507, 1458, 1576, 1656, 1783, 1464, 1933, 1950, 2014, 2034]