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.

A344907 Number of polygon edges formed when every pair of vertices of a regular (2n-1)-gon are joined by an infinite line.

Table of values

n a(n)
1 0
2 3
3 30
4 189
5 684
6 1815
7 3978
8 7665
9 13464
10 22059
11 34230
12 50853
13 72900
14 101439
15 137634
16 182745
17 238128
18 305235
19 385614
20 480909
21 592860
22 723303
23 874170
24 1047489
25 1245384
26 1470075
27 1723878
28 2009205
29 2328564
30 2684559
31 3079890
32 3517353
33 3999840
34 4530339
35 5111934
36 5747805
37 6441228
38 7195575

List of values

[0, 3, 30, 189, 684, 1815, 3978, 7665, 13464, 22059, 34230, 50853, 72900, 101439, 137634, 182745, 238128, 305235, 385614, 480909, 592860, 723303, 874170, 1047489, 1245384, 1470075, 1723878, 2009205, 2328564, 2684559, 3079890, 3517353, 3999840, 4530339, 5111934, 5747805, 6441228, 7195575]

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

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