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.

A340714 a(n) is the sum of (n-2*j) for j < n/2 coprime to n.

Table of values

n a(n)
1 0
2 0
3 1
4 2
5 4
6 4
7 9
8 8
9 13
10 12
11 25
12 12
13 36
14 24
15 32
16 32
17 64
18 28
19 81
20 40
21 66
22 60
23 121
24 48
25 124
26 84
27 121
28 84
29 196
30 56
31 225
32 128
33 170
34 144
35 216
36 108
37 324
38 180
39 240
40 160
41 400
42 120
43 441
44 220
45 272
46 264
47 529
48 192
49 513
50 252
51 416
52 312
53 676
54 244
55 560
56 336
57 522
58 420
59 841
60 240
61 900
62 480
63 570
64 512
65 792
66 320

List of values

[0, 0, 1, 2, 4, 4, 9, 8, 13, 12, 25, 12, 36, 24, 32, 32, 64, 28, 81, 40, 66, 60, 121, 48, 124, 84, 121, 84, 196, 56, 225, 128, 170, 144, 216, 108, 324, 180, 240, 160, 400, 120, 441, 220, 272, 264, 529, 192, 513, 252, 416, 312, 676, 244, 560, 336, 522, 420, 841, 240, 900, 480, 570, 512, 792, 320]

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

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