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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.

A230865 a(n) = n + (sum of digits in base-5 representation of n).

Table of values

n a(n)
0 0
1 2
2 4
3 6
4 8
5 6
6 8
7 10
8 12
9 14
10 12
11 14
12 16
13 18
14 20
15 18
16 20
17 22
18 24
19 26
20 24
21 26
22 28
23 30
24 32
25 26
26 28
27 30
28 32
29 34
30 32
31 34
32 36
33 38
34 40
35 38
36 40
37 42
38 44
39 46
40 44
41 46
42 48
43 50
44 52
45 50
46 52
47 54
48 56
49 58
50 52
51 54
52 56
53 58
54 60
55 58
56 60
57 62
58 64
59 66
60 64
61 66
62 68
63 70
64 72
65 70
66 72
67 74
68 76
69 78
70 76
71 78
72 80
73 82
74 84
75 78
76 80
77 82
78 84
79 86
80 84

List of values

[0, 2, 4, 6, 8, 6, 8, 10, 12, 14, 12, 14, 16, 18, 20, 18, 20, 22, 24, 26, 24, 26, 28, 30, 32, 26, 28, 30, 32, 34, 32, 34, 36, 38, 40, 38, 40, 42, 44, 46, 44, 46, 48, 50, 52, 50, 52, 54, 56, 58, 52, 54, 56, 58, 60, 58, 60, 62, 64, 66, 64, 66, 68, 70, 72, 70, 72, 74, 76, 78, 76, 78, 80, 82, 84, 78, 80, 82, 84, 86, 84]

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

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