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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.

A137936 a(n) = 5*mod(n,5) + floor(n/5).

Table of values

n a(n)
0 0
1 5
2 10
3 15
4 20
5 1
6 6
7 11
8 16
9 21
10 2
11 7
12 12
13 17
14 22
15 3
16 8
17 13
18 18
19 23
20 4
21 9
22 14
23 19
24 24
25 5
26 10
27 15
28 20
29 25
30 6
31 11
32 16
33 21
34 26
35 7
36 12
37 17
38 22
39 27
40 8
41 13
42 18
43 23
44 28
45 9
46 14
47 19
48 24
49 29
50 10
51 15
52 20
53 25
54 30
55 11
56 16
57 21
58 26
59 31
60 12
61 17
62 22
63 27
64 32
65 13
66 18
67 23
68 28
69 33
70 14
71 19
72 24
73 29
74 34

List of values

[0, 5, 10, 15, 20, 1, 6, 11, 16, 21, 2, 7, 12, 17, 22, 3, 8, 13, 18, 23, 4, 9, 14, 19, 24, 5, 10, 15, 20, 25, 6, 11, 16, 21, 26, 7, 12, 17, 22, 27, 8, 13, 18, 23, 28, 9, 14, 19, 24, 29, 10, 15, 20, 25, 30, 11, 16, 21, 26, 31, 12, 17, 22, 27, 32, 13, 18, 23, 28, 33, 14, 19, 24, 29, 34]

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