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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.

A295574 a(n) = Sum_{1 <= j <= n/2, gcd(j,n)=1} j^2.

Table of values

n a(n)
1 0
2 1
3 1
4 1
5 5
6 1
7 14
8 10
9 21
10 10
11 55
12 26
13 91
14 35
15 70
16 84
17 204
18 75
19 285
20 140
21 210
22 165
23 506
24 196
25 525
26 286
27 549
28 406
29 1015
30 340
31 1240
32 680
33 880
34 680
35 1190
36 654
37 2109
38 969
39 1482
40 1080
41 2870
42 966
43 3311
44 1650
45 2010
46 1771
47 4324
48 1544
49 4214
50 2050

List of values

[0, 1, 1, 1, 5, 1, 14, 10, 21, 10, 55, 26, 91, 35, 70, 84, 204, 75, 285, 140, 210, 165, 506, 196, 525, 286, 549, 406, 1015, 340, 1240, 680, 880, 680, 1190, 654, 2109, 969, 1482, 1080, 2870, 966, 3311, 1650, 2010, 1771, 4324, 1544, 4214, 2050]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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