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.

A352907 Records in the number of iterations in the 3x+1 sequences required to reach a power of 2.

Table of values

n a(n)
1 0
2 3
3 4
4 12
5 15
6 16
7 19
8 107
9 108
10 111
11 114
12 117
13 120
14 123
15 126
16 139
17 140
18 166
19 174
20 177
21 178
22 204
23 212
24 233
25 257
26 263
27 271
28 274
29 277
30 303
31 306
32 319
33 335
34 346
35 349
36 370
37 378
38 381
39 438
40 444
41 465
42 504
43 520
44 523
45 526
46 552
47 555
48 558
49 579
50 592
51 608
52 660
53 681
54 684

List of values

[0, 3, 4, 12, 15, 16, 19, 107, 108, 111, 114, 117, 120, 123, 126, 139, 140, 166, 174, 177, 178, 204, 212, 233, 257, 263, 271, 274, 277, 303, 306, 319, 335, 346, 349, 370, 378, 381, 438, 444, 465, 504, 520, 523, 526, 552, 555, 558, 579, 592, 608, 660, 681, 684]