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.

A344899 Number of polygon edges 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 1
3 3
4 8
5 30
6 78
7 189
8 320
9 684
10 1010
11 1815
12 2052
13 3978
14 4718
15 7665
16 8576
17 13464
18 12546
19 22059
20 23720
21 34230
22 36542
23 50853
24 47928
25 72900
26 76466
27 101439
28 105560
29 137634
30 115230
31 182745
32 188672
33 238128
34 245378
35 305235
36 294948
37 385614
38 395390
39 480909
40 491840
41 592860
42 544950
43 723303
44 737528

List of values

[0, 1, 3, 8, 30, 78, 189, 320, 684, 1010, 1815, 2052, 3978, 4718, 7665, 8576, 13464, 12546, 22059, 23720, 34230, 36542, 50853, 47928, 72900, 76466, 101439, 105560, 137634, 115230, 182745, 188672, 238128, 245378, 305235, 294948, 385614, 395390, 480909, 491840, 592860, 544950, 723303, 737528]

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

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