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.

A165909 a(n) is the sum of the quadratic residues of n.

Table of values

n a(n)
1 0
2 1
3 1
4 1
5 5
6 8
7 7
8 5
9 12
10 25
11 22
12 14
13 39
14 42
15 30
16 14
17 68
18 60
19 76
20 35
21 70
22 110
23 92
24 42
25 125
26 169
27 126
28 84
29 203
30 150
31 186
32 72
33 165
34 289
35 175
36 96
37 333
38 342
39 208
40 135
41 410
42 308
43 430
44 198
45 225
46 460
47 423
48 124
49 490
50 525
51 408
52 299
53 689
54 549
55 385
56 252
57 532
58 841
59 767
60 270

List of values

[0, 1, 1, 1, 5, 8, 7, 5, 12, 25, 22, 14, 39, 42, 30, 14, 68, 60, 76, 35, 70, 110, 92, 42, 125, 169, 126, 84, 203, 150, 186, 72, 165, 289, 175, 96, 333, 342, 208, 135, 410, 308, 430, 198, 225, 460, 423, 124, 490, 525, 408, 299, 689, 549, 385, 252, 532, 841, 767, 270]