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.

A371375 Place n equally spaced points around the circumference of a circle and then, for each pair of points, draw two distinct circles, whose radii are the same as the first circle, such that both points lie on their circumferences. The sequence gives the total number of (curved) edges formed.

Table of values

n a(n)
1 1
2 2
3 12
4 12
5 75
6 66
7 350
8 360
9 1071
10 1150
11 2684
12 2148
13 5603
14 5950
15 10110
16 10928
17 18309
18 16830
19 29564
20 30500
21 44961
22 46882
23 66746
24 64872
25 95125
26 97786
27 131112
28 135156
29 177567
30 169770
31 235042
32 240928
33 304359
34 312086
35 389340
36 388764
37 491175
38 503158
39 610662
40 624280
41 752145
42 749742
43 917276

List of values

[1, 2, 12, 12, 75, 66, 350, 360, 1071, 1150, 2684, 2148, 5603, 5950, 10110, 10928, 18309, 16830, 29564, 30500, 44961, 46882, 66746, 64872, 95125, 97786, 131112, 135156, 177567, 169770, 235042, 240928, 304359, 312086, 389340, 388764, 491175, 503158, 610662, 624280, 752145, 749742, 917276]