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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.

A124176 Consider the map f that sends m to m + (sum of odd digits of m) - (sum of even digits of m). Sequence gives numbers m such that f^(k)(m) = m for some k.

Table of values

n a(n)
1 0
2 11
3 13
4 17
5 18
6 25
7 28
8 54
9 55
10 64
11 65
12 112
13 121
14 134
15 137
16 143
17 148
18 155
19 156
20 165
21 166
22 173
23 178
24 184
25 187
26 198
27 200
28 209
29 211
30 216
31 231
32 233
33 234
34 237
35 244
36 245
37 270
38 275
39 280
40 285
41 314
42 336
43 341
44 358
45 363
46 385
47 396
48 402
49 407
50 410
51 413
52 429
53 431
54 432

List of values

[0, 11, 13, 17, 18, 25, 28, 54, 55, 64, 65, 112, 121, 134, 137, 143, 148, 155, 156, 165, 166, 173, 178, 184, 187, 198, 200, 209, 211, 216, 231, 233, 234, 237, 244, 245, 270, 275, 280, 285, 314, 336, 341, 358, 363, 385, 396, 402, 407, 410, 413, 429, 431, 432]

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

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