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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.

A243115 Starting values of the reduced Collatz function (A014682) where 2 to the power of the "dropping time" is greater than the starting value.

Table of values

n a(n)
1 3
2 7
3 11
4 15
5 23
6 27
7 31
8 39
9 47
10 59
11 63
12 71
13 79
14 91
15 95
16 103
17 111
18 123
19 127
20 155
21 159
22 167
23 175
24 191
25 199
26 207
27 219
28 223
29 231
30 239
31 251
32 255
33 283
34 287
35 303
36 319
37 327
38 347
39 359
40 367
41 383
42 411
43 415
44 423
45 447
46 463
47 479
48 487
49 495
50 507
51 511
52 539
53 543
54 559
55 575

List of values

[3, 7, 11, 15, 23, 27, 31, 39, 47, 59, 63, 71, 79, 91, 95, 103, 111, 123, 127, 155, 159, 167, 175, 191, 199, 207, 219, 223, 231, 239, 251, 255, 283, 287, 303, 319, 327, 347, 359, 367, 383, 411, 415, 423, 447, 463, 479, 487, 495, 507, 511, 539, 543, 559, 575]

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

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