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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.

A379927 Replacing each term of this sequence S with its digitsum produces a new sequence S' such that S and S' share the same succession of nonzero digits.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 19
12 18
13 28
14 17
15 11
16 26
17 37
18 16
19 29
20 20
21 15
22 12
23 25
24 46
25 24
26 101
27 27
28 110
29 55
30 14
31 39
32 200
33 23
34 13
35 33
36 299
37 22
38 38
39 389
40 34
41 47
42 32
43 41
44 59
45 21
46 36
47 398
48 479
49 30
50 49
51 102
52 111
53 488
54 45
55 54
56 497
57 569
58 120
59 35
60 201
61 44
62 63
63 210
64 31

List of values

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 19, 18, 28, 17, 11, 26, 37, 16, 29, 20, 15, 12, 25, 46, 24, 101, 27, 110, 55, 14, 39, 200, 23, 13, 33, 299, 22, 38, 389, 34, 47, 32, 41, 59, 21, 36, 398, 479, 30, 49, 102, 111, 488, 45, 54, 497, 569, 120, 35, 201, 44, 63, 210, 31]

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

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