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.

A180686 Positive integers k such that the number of intersections of diagonals in the interior of a regular k-gon is prime.

Table of values

n a(n)
1 5
2 6
3 14
4 24
5 44
6 58
7 72
8 76
9 80
10 84
11 86
12 104
13 128
14 134
15 138
16 180
17 186
18 188
19 218
20 228
21 246
22 256
23 266
24 280
25 300
26 320
27 352
28 360
29 380
30 390
31 408
32 450
33 480
34 508
35 518
36 524
37 526
38 532
39 546
40 548
41 552
42 576
43 584
44 590
45 604
46 616
47 630
48 656
49 658
50 686
51 712
52 724
53 726
54 728
55 730

List of values

[5, 6, 14, 24, 44, 58, 72, 76, 80, 84, 86, 104, 128, 134, 138, 180, 186, 188, 218, 228, 246, 256, 266, 280, 300, 320, 352, 360, 380, 390, 408, 450, 480, 508, 518, 524, 526, 532, 546, 548, 552, 576, 584, 590, 604, 616, 630, 656, 658, 686, 712, 724, 726, 728, 730]

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

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