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.

A359047 Number of distinct edges among all circles that can be constructed on vertices of an n-sided regular polygon, using only a compass.

Table of values

n a(n)
1 1
2 4
3 12
4 84
5 120
6 330
7 504
8 1240
9 1332
10 2850
11 3696
12 5172
13 7176
14 10906
15 12660
16 19280
17 22440
18 28494
19 35796
20 46220
21 52752
22 68662
23 79488
24 91272
25 111000
26 136838
27 149472
28 181972
29 204972
30 229650
31 268212
32 317024
33 343860
34 404090
35 441420
36 496764
37 553224
38 636538
39 679224
40 776200
41 839844
42 914634
43 1017036

List of values

[1, 4, 12, 84, 120, 330, 504, 1240, 1332, 2850, 3696, 5172, 7176, 10906, 12660, 19280, 22440, 28494, 35796, 46220, 52752, 68662, 79488, 91272, 111000, 136838, 149472, 181972, 204972, 229650, 268212, 317024, 343860, 404090, 441420, 496764, 553224, 636538, 679224, 776200, 839844, 914634, 1017036]

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

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