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.

A344857 Number of polygons formed when every pair of vertices of a regular n-gon are joined by an infinite line.

Table of values

n a(n)
1 0
2 0
3 1
4 4
5 16
6 42
7 99
8 176
9 352
10 540
11 925
12 1152
13 2016
14 2534
15 3871
16 4608
17 6784
18 6984
19 11097
20 12580
21 17200
22 19250
23 25531
24 26016
25 36576
26 39988
27 50869
28 55076
29 68992
30 63570
31 91575
32 97920
33 119296
34 127024
35 152881
36 155088
37 193104
38 203946
39 240787
40 253360
41 296800
42 289044
43 362061
44 378884
45 437536
46 456918

List of values

[0, 0, 1, 4, 16, 42, 99, 176, 352, 540, 925, 1152, 2016, 2534, 3871, 4608, 6784, 6984, 11097, 12580, 17200, 19250, 25531, 26016, 36576, 39988, 50869, 55076, 68992, 63570, 91575, 97920, 119296, 127024, 152881, 155088, 193104, 203946, 240787, 253360, 296800, 289044, 362061, 378884, 437536, 456918]