A210471 - cp's OEIS frontend

A210471 Collatz (3x+1) problem with rational numbers: number of steps to reach the end of the cycle starting with 1/(2n+1).

n	a(n)
0	1
1	3
2	4
3	7
4	6
5	8
6	5
7	18
8	9
9	32
10	11
11	77
12	25
13	9
14	6
15	36
16	29
17	18
18	17
19	12
20	28
21	14
22	23
23	45
24	73
25	55
26	91
27	16
28	17
29	39
30	7
31	36
32	40
33	114
34	87
35	100
36	93
37	34
38	54
39	64
40	14
41	55
42	171
43	80
44	57
45	72
46	42
47	108
48	24
49	12
50	97
51	68
52	31
53	159
54	88
55	10
56	41
57	50
58	23
59	117
60	63
61	61
62	8
63	55
64	72
65	45
66	68

[1, 3, 4, 7, 6, 8, 5, 18, 9, 32, 11, 77, 25, 9, 6, 36, 29, 18, 17, 12, 28, 14, 23, 45, 73, 55, 91, 16, 17, 39, 7, 36, 40, 114, 87, 100, 93, 34, 54, 64, 14, 55, 171, 80, 57, 72, 42, 108, 24, 12, 97, 68, 31, 159, 88, 10, 41, 50, 23, 117, 63, 61, 8, 55, 72, 45, 68]

cp's OEIS Frontend

A210471 Collatz (3x+1) problem with rational numbers: number of steps to reach the end of the cycle starting with 1/(2n+1).

Table of values

List of values

n	a(n)
0	1
1	3
2	4
3	7
4	6
5	8
6	5
7	18
8	9
9	32
10	11
11	77
12	25
13	9
14	6
15	36
16	29
17	18
18	17
19	12
20	28
21	14
22	23
23	45
24	73
25	55
26	91
27	16
28	17
29	39
30	7
31	36
32	40
33	114
34	87
35	100
36	93
37	34
38	54
39	64
40	14
41	55
42	171
43	80
44	57
45	72
46	42
47	108
48	24
49	12
50	97
51	68
52	31
53	159
54	88
55	10
56	41
57	50
58	23
59	117
60	63
61	61
62	8
63	55
64	72
65	45
66	68

n	a(n)
0	1
1	3
2	4
3	7
4	6
5	8
6	5
7	18
8	9
9	32
10	11
11	77
12	25
13	9
14	6
15	36
16	29
17	18
18	17
19	12
20	28
21	14
22	23
23	45
24	73
25	55
26	91
27	16
28	17
29	39
30	7
31	36
32	40
33	114
34	87
35	100
36	93
37	34
38	54
39	64
40	14
41	55
42	171
43	80
44	57
45	72
46	42
47	108
48	24
49	12
50	97
51	68
52	31
53	159
54	88
55	10
56	41
57	50
58	23
59	117
60	63
61	61
62	8
63	55
64	72
65	45
66	68

n	a(n)
0	1
1	3
2	4
3	7
4	6
5	8
6	5
7	18
8	9
9	32
10	11
11	77
12	25
13	9
14	6
15	36
16	29
17	18
18	17
19	12
20	28
21	14
22	23
23	45
24	73
25	55
26	91
27	16
28	17
29	39
30	7
31	36
32	40
33	114
34	87
35	100
36	93
37	34
38	54
39	64
40	14
41	55
42	171
43	80
44	57
45	72
46	42
47	108
48	24
49	12
50	97
51	68
52	31
53	159
54	88
55	10
56	41
57	50
58	23
59	117
60	63
61	61
62	8
63	55
64	72
65	45
66	68