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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.

A339541 a(n) = n + sod(n, sod(n, 10)), where sod(n,b) is the sum of base-b digits of n.

Table of values

n a(n)
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 20
11 14
12 14
13 17
14 20
15 20
16 20
17 20
18 20
19 29
20 22
21 24
22 26
23 30
24 28
25 32
26 31
27 30
28 38
29 38
30 32
31 38
32 36
33 41
34 44
35 42
36 40
37 47
38 46
39 45
40 44
41 46
42 44
43 50
44 53
45 50
46 56
47 54
48 52
49 62
50 52
51 57
52 56
53 64
54 60
55 65
56 62
57 70
58 68
59 66
60 65
61 68
62 75
63 70
64 74
65 80
66 77
67 74
68 84
69 82
70 74
71 79
72 80
73 83
74 88
75 84
76 92

List of values

[2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 14, 14, 17, 20, 20, 20, 20, 20, 29, 22, 24, 26, 30, 28, 32, 31, 30, 38, 38, 32, 38, 36, 41, 44, 42, 40, 47, 46, 45, 44, 46, 44, 50, 53, 50, 56, 54, 52, 62, 52, 57, 56, 64, 60, 65, 62, 70, 68, 66, 65, 68, 75, 70, 74, 80, 77, 74, 84, 82, 74, 79, 80, 83, 88, 84, 92]

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

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