A075680 - cp's OEIS frontend

A075680 For odd numbers 2n-1, the minimum number of iterations of the reduced Collatz function R required to yield 1. The function R is defined as R(k) = (3k+1)/2^r, with r as large as possible.

n	a(n)
1	0
2	2
3	1
4	5
5	6
6	4
7	2
8	5
9	3
10	6
11	1
12	4
13	7
14	41
15	5
16	39
17	8
18	3
19	6
20	11
21	40
22	9
23	4
24	38
25	7
26	7
27	2
28	41
29	10
30	10
31	5
32	39
33	8
34	8
35	3
36	37
37	42
38	3
39	6
40	11
41	6
42	40
43	1
44	9
45	9
46	33
47	4
48	38
49	43
50	7
51	7
52	31
53	12
54	36
55	41
56	24
57	2
58	10
59	5
60	10
61	34
62	15
63	39
64	15
65	44
66	8
67	8
68	13
69	32
70	13
71	3
72	37
73	42
74	42
75	6
76	3
77	11
78	30
79	11
80	18
81	35
82	6
83	40
84	23

[0, 2, 1, 5, 6, 4, 2, 5, 3, 6, 1, 4, 7, 41, 5, 39, 8, 3, 6, 11, 40, 9, 4, 38, 7, 7, 2, 41, 10, 10, 5, 39, 8, 8, 3, 37, 42, 3, 6, 11, 6, 40, 1, 9, 9, 33, 4, 38, 43, 7, 7, 31, 12, 36, 41, 24, 2, 10, 5, 10, 34, 15, 39, 15, 44, 8, 8, 13, 32, 13, 3, 37, 42, 42, 6, 3, 11, 30, 11, 18, 35, 6, 40, 23]

cp's OEIS Frontend

A075680 For odd numbers 2n-1, the minimum number of iterations of the reduced Collatz function R required to yield 1. The function R is defined as R(k) = (3k+1)/2^r, with r as large as possible.

Table of values

List of values

n	a(n)
1	0
2	2
3	1
4	5
5	6
6	4
7	2
8	5
9	3
10	6
11	1
12	4
13	7
14	41
15	5
16	39
17	8
18	3
19	6
20	11
21	40
22	9
23	4
24	38
25	7
26	7
27	2
28	41
29	10
30	10
31	5
32	39
33	8
34	8
35	3
36	37
37	42
38	3
39	6
40	11
41	6
42	40
43	1
44	9
45	9
46	33
47	4
48	38
49	43
50	7
51	7
52	31
53	12
54	36
55	41
56	24
57	2
58	10
59	5
60	10
61	34
62	15
63	39
64	15
65	44
66	8
67	8
68	13
69	32
70	13
71	3
72	37
73	42
74	42
75	6
76	3
77	11
78	30
79	11
80	18
81	35
82	6
83	40
84	23

n	a(n)
1	0
2	2
3	1
4	5
5	6
6	4
7	2
8	5
9	3
10	6
11	1
12	4
13	7
14	41
15	5
16	39
17	8
18	3
19	6
20	11
21	40
22	9
23	4
24	38
25	7
26	7
27	2
28	41
29	10
30	10
31	5
32	39
33	8
34	8
35	3
36	37
37	42
38	3
39	6
40	11
41	6
42	40
43	1
44	9
45	9
46	33
47	4
48	38
49	43
50	7
51	7
52	31
53	12
54	36
55	41
56	24
57	2
58	10
59	5
60	10
61	34
62	15
63	39
64	15
65	44
66	8
67	8
68	13
69	32
70	13
71	3
72	37
73	42
74	42
75	6
76	3
77	11
78	30
79	11
80	18
81	35
82	6
83	40
84	23

n	a(n)
1	0
2	2
3	1
4	5
5	6
6	4
7	2
8	5
9	3
10	6
11	1
12	4
13	7
14	41
15	5
16	39
17	8
18	3
19	6
20	11
21	40
22	9
23	4
24	38
25	7
26	7
27	2
28	41
29	10
30	10
31	5
32	39
33	8
34	8
35	3
36	37
37	42
38	3
39	6
40	11
41	6
42	40
43	1
44	9
45	9
46	33
47	4
48	38
49	43
50	7
51	7
52	31
53	12
54	36
55	41
56	24
57	2
58	10
59	5
60	10
61	34
62	15
63	39
64	15
65	44
66	8
67	8
68	13
69	32
70	13
71	3
72	37
73	42
74	42
75	6
76	3
77	11
78	30
79	11
80	18
81	35
82	6
83	40
84	23