A070991 - cp's OEIS frontend

A070991 Numbers n such that the trajectory of n under the `3x+1' map reaches n - 1.

n	a(n)
1	2
2	3
3	5
4	6
5	9
6	11
7	14
8	17
9	18
10	39
11	41
12	47
13	54
14	57
15	59
16	62
17	71
18	81
19	89
20	107
21	108
22	161
23	252
24	284
25	378
26	639
27	651
28	959
29	977
30	1368
31	1439
32	1823
33	2159
34	2430
35	2735
36	3239
37	4103
38	4617
39	4859
40	6155
41	7289
42	9233

[2, 3, 5, 6, 9, 11, 14, 17, 18, 39, 41, 47, 54, 57, 59, 62, 71, 81, 89, 107, 108, 161, 252, 284, 378, 639, 651, 959, 977, 1368, 1439, 1823, 2159, 2430, 2735, 3239, 4103, 4617, 4859, 6155, 7289, 9233]

cp's OEIS Frontend

A070991 Numbers n such that the trajectory of n under the `3x+1' map reaches n - 1.

Table of values

List of values