cp's OEIS Frontend

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.

A124074 Consider the map that sends a number m to m - reverse(m) if that is nonnegative, otherwise to m + reverse(m). Sequence gives those numbers that reach a nonzero cycle under repeated application of this map.

Table of values

n a(n)
1 119
2 129
3 169
4 179
5 188
6 198
7 200
8 210
9 218
10 220
11 228
12 230
13 240
14 249
15 250
16 260
17 268
18 270
19 278
20 280
21 287
22 290
23 297
24 299
25 300
26 301
27 310
28 311
29 317
30 320
31 321
32 327
33 330
34 331
35 340
36 341
37 348
38 349
39 350
40 351
41 360
42 361
43 367
44 370
45 371
46 377
47 380
48 381
49 386
50 389
51 390

List of values

[119, 129, 169, 179, 188, 198, 200, 210, 218, 220, 228, 230, 240, 249, 250, 260, 268, 270, 278, 280, 287, 290, 297, 299, 300, 301, 310, 311, 317, 320, 321, 327, 330, 331, 340, 341, 348, 349, 350, 351, 360, 361, 367, 370, 371, 377, 380, 381, 386, 389, 390]

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

Content is available under The OEIS End-User License Agreement.