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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.

A154820 Numbers whose trajectory under iteration of sum of cubes of digits eventually turns out to follow the cyclic iteration of 133, 55, 250.

Table of values

n a(n)
1 4
2 13
3 25
4 28
5 31
6 40
7 46
8 52
9 55
10 64
11 82
12 103
13 130
14 133
15 205
16 208
17 250
18 256
19 265
20 280
21 289
22 298
23 301
24 310
25 313
26 331
27 349
28 394
29 400
30 406
31 439
32 448
33 460
34 484
35 493
36 502
37 505
38 520
39 526
40 550
41 562
42 589
43 598
44 604
45 625
46 640
47 652
48 679
49 697
50 769
51 796
52 802
53 820
54 829

List of values

[4, 13, 25, 28, 31, 40, 46, 52, 55, 64, 82, 103, 130, 133, 205, 208, 250, 256, 265, 280, 289, 298, 301, 310, 313, 331, 349, 394, 400, 406, 439, 448, 460, 484, 493, 502, 505, 520, 526, 550, 562, 589, 598, 604, 625, 640, 652, 679, 697, 769, 796, 802, 820, 829]

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

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