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.

A345689 For 1<=x<=n, 1<=y<=n, write gcd(x,y) = u*x+v*y with u,v minimal; a(n) = n^4*s, where s is the population variance of the values of |u|.

Table of values

n a(n)
1 0
2 3
3 20
4 64
5 236
6 432
7 1372
8 2652
9 5588
10 8384
11 18576
12 28143
13 52588
14 71476
15 106700
16 152688
17 251698
18 323451
19 496672
20 639599
21 847700
22 1059379
23 1526548
24 1855287
25 2479604
26 2990859
27 3827060
28 4631431
29 6138690
30 7153524
31 9258556
32 10957212
33 13153070
34 15219123
35 18354306

List of values

[0, 3, 20, 64, 236, 432, 1372, 2652, 5588, 8384, 18576, 28143, 52588, 71476, 106700, 152688, 251698, 323451, 496672, 639599, 847700, 1059379, 1526548, 1855287, 2479604, 2990859, 3827060, 4631431, 6138690, 7153524, 9258556, 10957212, 13153070, 15219123, 18354306]