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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.

A318759 Numbers x whose trajectory reaches 1 under recursive applications of the map x -> x/3 if x == 0 (mod 3), x -> (4*x+2)/3 if x == 1 (mod 3), x -> (4*x+1)/3 if x == 2 (mod 3).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 6
6 9
7 12
8 13
9 18
10 20
11 27
12 29
13 36
14 39
15 40
16 54
17 60
18 65
19 81
20 87
21 108
22 109
23 117
24 120
25 121
26 136
27 146
28 162
29 180
30 182
31 195
32 197
33 243
34 245
35 261
36 263
37 272
38 324
39 327
40 328
41 332
42 351
43 360
44 363

List of values

[1, 2, 3, 4, 6, 9, 12, 13, 18, 20, 27, 29, 36, 39, 40, 54, 60, 65, 81, 87, 108, 109, 117, 120, 121, 136, 146, 162, 180, 182, 195, 197, 243, 245, 261, 263, 272, 324, 327, 328, 332, 351, 360, 363]

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

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