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.

A267969 Conjectured list of positive numbers k such that the Collatz-like map T: if x > 1 and x odd, x -> 5*x+1 and, if x even, x -> x/2, when started at k, eventually reaches a cycle that does not contain 1 (cf. A232711).

Table of values

n a(n)
1 5
2 10
3 13
4 17
5 20
6 26
7 27
8 33
9 34
10 40
11 43
12 52
13 54
14 66
15 68
16 80
17 83
18 86
19 104
20 105
21 108
22 132
23 136
24 160
25 166
26 172
27 181
28 185
29 208
30 210
31 211
32 215
33 216
34 245
35 263
36 264
37 269
38 272
39 275
40 320
41 329
42 332
43 344
44 362
45 370
46 416
47 420
48 422
49 430
50 432
51 435
52 453
53 457
54 463
55 490
56 526

List of values

[5, 10, 13, 17, 20, 26, 27, 33, 34, 40, 43, 52, 54, 66, 68, 80, 83, 86, 104, 105, 108, 132, 136, 160, 166, 172, 181, 185, 208, 210, 211, 215, 216, 245, 263, 264, 269, 272, 275, 320, 329, 332, 344, 362, 370, 416, 420, 422, 430, 432, 435, 453, 457, 463, 490, 526]

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

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