A320020 - cp's OEIS frontend

A320020 Numbers whose Collatz trajectory always alternates between a halving and a tripling step until a power of 2 is reached.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	10
9	16
10	21
11	32
12	42
13	64
14	85
15	128
16	151
17	170
18	227
19	256
20	302
21	341
22	454
23	512
24	682
25	1024
26	1365
27	2048
28	2730
29	4096
30	5461
31	8192
32	10922
33	14563
34	16384
35	21845
36	29126
37	32768
38	43690
39	65536
40	87381
41	131072
42	174762
43	262144
44	349525
45	524288
46	699050
47	932067

[1, 2, 3, 4, 5, 6, 8, 10, 16, 21, 32, 42, 64, 85, 128, 151, 170, 227, 256, 302, 341, 454, 512, 682, 1024, 1365, 2048, 2730, 4096, 5461, 8192, 10922, 14563, 16384, 21845, 29126, 32768, 43690, 65536, 87381, 131072, 174762, 262144, 349525, 524288, 699050, 932067]

cp's OEIS Frontend

A320020 Numbers whose Collatz trajectory always alternates between a halving and a tripling step until a power of 2 is reached.

Table of values

List of values