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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.

A340615 a(n) = k/2 if k is even, otherwise (3k+1)/2, where k = n + floor((n+1)/5).

Table of values

n a(n)
0 0
1 2
2 1
3 5
4 8
5 3
6 11
7 4
8 14
9 17
10 6
11 20
12 7
13 23
14 26
15 9
16 29
17 10
18 32
19 35
20 12
21 38
22 13
23 41
24 44
25 15
26 47
27 16
28 50
29 53
30 18
31 56
32 19
33 59
34 62
35 21
36 65
37 22
38 68
39 71
40 24
41 74
42 25
43 77
44 80
45 27
46 83
47 28
48 86
49 89
50 30
51 92
52 31
53 95
54 98
55 33
56 101
57 34
58 104
59 107
60 36
61 110
62 37
63 113
64 116
65 39
66 119
67 40
68 122

List of values

[0, 2, 1, 5, 8, 3, 11, 4, 14, 17, 6, 20, 7, 23, 26, 9, 29, 10, 32, 35, 12, 38, 13, 41, 44, 15, 47, 16, 50, 53, 18, 56, 19, 59, 62, 21, 65, 22, 68, 71, 24, 74, 25, 77, 80, 27, 83, 28, 86, 89, 30, 92, 31, 95, 98, 33, 101, 34, 104, 107, 36, 110, 37, 113, 116, 39, 119, 40, 122]

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

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