A377524 - cp's OEIS frontend

A377524 Number of steps for n to reach the minimum of its final cycle under iterations of the map (A123684): x->(3x-1)/2 if x odd, x/2 otherwise; or -1 if this never happens.

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

[0, 1, 3, 2, 0, 4, 2, 3, 7, 1, 5, 5, 6, 3, 7, 4, 0, 8, 5, 2, 5, 6, 2, 6, 10, 7, 4, 4, 8, 8, 4, 5, 12, 1, 9, 9, 9, 6, 10, 3, 6, 6, 7, 7, 14, 3, 11, 7, 11, 11, 8, 8, 12, 5, 8, 5, 20, 9, 9, 9, 5, 5, 13, 6, 25, 13, 13, 2, 14, 10, 14, 10, 10, 10, 7, 7, 11, 11, 11, 4]

cp's OEIS Frontend

A377524 Number of steps for n to reach the minimum of its final cycle under iterations of the map (A123684): x->(3x-1)/2 if x odd, x/2 otherwise; or -1 if this never happens.

Table of values

List of values

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

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

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