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.

A231589 a(n) = sum_{k=1..(n-1)/2} (k^2 mod n).

Table of values

n a(n)
1 0
2 0
3 1
4 1
5 5
6 5
7 7
8 6
9 12
10 20
11 22
12 19
13 39
14 35
15 35
16 28
17 68
18 60
19 76
20 65
21 91
22 99
23 92
24 74
25 125
26 156
27 144
28 147
29 203
30 175
31 186
32 152
33 242
34 272
35 245
36 201
37 333
38 323
39 286
40 270
41 410
42 392
43 430
44 363
45 420
46 437
47 423
48 340
49 490
50 550
51 578
52 585
53 689
54 639
55 605
56 546
57 760
58 812

List of values

[0, 0, 1, 1, 5, 5, 7, 6, 12, 20, 22, 19, 39, 35, 35, 28, 68, 60, 76, 65, 91, 99, 92, 74, 125, 156, 144, 147, 203, 175, 186, 152, 242, 272, 245, 201, 333, 323, 286, 270, 410, 392, 430, 363, 420, 437, 423, 340, 490, 550, 578, 585, 689, 639, 605, 546, 760, 812]