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.

A381977 Number of edge intersections in the divisibility circle graph of n (base 10).

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 0
6 3
7 3
8 5
9 0
10 0
11 0
12 12
13 18
14 19
15 21
16 27
17 35
18 36
19 57
20 20
21 45
22 25
23 71
24 75
25 65
26 88
27 90
28 110
29 137
30 81
31 120
32 135
33 42
34 162
35 150
36 180
37 204
38 215
39 252
40 165
41 230
42 252
43 282
44 208
45 270
46 315
47 341
48 357
49 402
50 290
51 375
52 400
53 440
54 441
55 340
56 481
57 513
58 530
59 587
60 456

List of values

[0, 0, 0, 0, 0, 3, 3, 5, 0, 0, 0, 12, 18, 19, 21, 27, 35, 36, 57, 20, 45, 25, 71, 75, 65, 88, 90, 110, 137, 81, 120, 135, 42, 162, 150, 180, 204, 215, 252, 165, 230, 252, 282, 208, 270, 315, 341, 357, 402, 290, 375, 400, 440, 441, 340, 481, 513, 530, 587, 456]