A246009 - cp's OEIS frontend

A246009 Length of Collatz cycles '3*n + 1' of prime numbers.

n	a(n)
1	2
2	8
3	6
4	17
5	15
6	10
7	13
8	21
9	16
10	19
11	107
12	22
13	110
14	30
15	105
16	12
17	33
18	20
19	28
20	103
21	116
22	36
23	111
24	31
25	119
26	26
27	88
28	101
29	114
30	13
31	47
32	29
33	91
34	42
35	24
36	16
37	37
38	24
39	68
40	32
41	32
42	19
43	45
44	120
45	27
46	120
47	40
48	71
49	14
50	35
51	84
52	53
53	22
54	66
55	123
56	79
57	30
58	43
59	17
60	43
61	61
62	118
63	38
64	87
65	131
66	38
67	25
68	113
69	126
70	33
71	126
72	51
73	46
74	20
75	59

[2, 8, 6, 17, 15, 10, 13, 21, 16, 19, 107, 22, 110, 30, 105, 12, 33, 20, 28, 103, 116, 36, 111, 31, 119, 26, 88, 101, 114, 13, 47, 29, 91, 42, 24, 16, 37, 24, 68, 32, 32, 19, 45, 120, 27, 120, 40, 71, 14, 35, 84, 53, 22, 66, 123, 79, 30, 43, 17, 43, 61, 118, 38, 87, 131, 38, 25, 113, 126, 33, 126, 51, 46, 20, 59]

cp's OEIS Frontend

A246009 Length of Collatz cycles '3*n + 1' of prime numbers.

Table of values

List of values

n	a(n)
1	2
2	8
3	6
4	17
5	15
6	10
7	13
8	21
9	16
10	19
11	107
12	22
13	110
14	30
15	105
16	12
17	33
18	20
19	28
20	103
21	116
22	36
23	111
24	31
25	119
26	26
27	88
28	101
29	114
30	13
31	47
32	29
33	91
34	42
35	24
36	16
37	37
38	24
39	68
40	32
41	32
42	19
43	45
44	120
45	27
46	120
47	40
48	71
49	14
50	35
51	84
52	53
53	22
54	66
55	123
56	79
57	30
58	43
59	17
60	43
61	61
62	118
63	38
64	87
65	131
66	38
67	25
68	113
69	126
70	33
71	126
72	51
73	46
74	20
75	59

n	a(n)
1	2
2	8
3	6
4	17
5	15
6	10
7	13
8	21
9	16
10	19
11	107
12	22
13	110
14	30
15	105
16	12
17	33
18	20
19	28
20	103
21	116
22	36
23	111
24	31
25	119
26	26
27	88
28	101
29	114
30	13
31	47
32	29
33	91
34	42
35	24
36	16
37	37
38	24
39	68
40	32
41	32
42	19
43	45
44	120
45	27
46	120
47	40
48	71
49	14
50	35
51	84
52	53
53	22
54	66
55	123
56	79
57	30
58	43
59	17
60	43
61	61
62	118
63	38
64	87
65	131
66	38
67	25
68	113
69	126
70	33
71	126
72	51
73	46
74	20
75	59

n	a(n)
1	2
2	8
3	6
4	17
5	15
6	10
7	13
8	21
9	16
10	19
11	107
12	22
13	110
14	30
15	105
16	12
17	33
18	20
19	28
20	103
21	116
22	36
23	111
24	31
25	119
26	26
27	88
28	101
29	114
30	13
31	47
32	29
33	91
34	42
35	24
36	16
37	37
38	24
39	68
40	32
41	32
42	19
43	45
44	120
45	27
46	120
47	40
48	71
49	14
50	35
51	84
52	53
53	22
54	66
55	123
56	79
57	30
58	43
59	17
60	43
61	61
62	118
63	38
64	87
65	131
66	38
67	25
68	113
69	126
70	33
71	126
72	51
73	46
74	20
75	59