A246007 - cp's OEIS frontend

A246007 Length of pseudo-Collatz cycles '3*n - 1' of prime numbers.

n	a(n)
1	2
2	5
3	3
4	6
5	7
6	7
7	19
8	5
9	4
10	11
11	7
12	15
13	10
14	9
15	14
16	17
17	12
18	8
19	21
20	20
21	16
22	15
23	11
24	33
25	36
26	36
27	18
28	10
29	14
30	31
31	26
32	22
33	21
34	13
35	26
36	34
37	16
38	12
39	21
40	42
41	25
42	16
43	16
44	37
45	20
46	29
47	19
48	24
49	32
50	90
51	28
52	28
53	19
54	19
55	85
56	23
57	40
58	14
59	36
60	27
61	22
62	49
63	17
64	31
65	31
66	40
67	13
68	44
69	43
70	26
71	66
72	43
73	25
74	25
75	25
76	30
77	21
78	30
79	30
80	51
81	20
82	25
83	25
84	33
85	47
86	16
87	47
88	91
89	46
90	46
91	29
92	46
93	28

[2, 5, 3, 6, 7, 7, 19, 5, 4, 11, 7, 15, 10, 9, 14, 17, 12, 8, 21, 20, 16, 15, 11, 33, 36, 36, 18, 10, 14, 31, 26, 22, 21, 13, 26, 34, 16, 12, 21, 42, 25, 16, 16, 37, 20, 29, 19, 24, 32, 90, 28, 28, 19, 19, 85, 23, 40, 14, 36, 27, 22, 49, 17, 31, 31, 40, 13, 44, 43, 26, 66, 43, 25, 25, 25, 30, 21, 30, 30, 51, 20, 25, 25, 33, 47, 16, 47, 91, 46, 46, 29, 46, 28]

cp's OEIS Frontend

A246007 Length of pseudo-Collatz cycles '3*n - 1' of prime numbers.

Table of values

List of values

n	a(n)
1	2
2	5
3	3
4	6
5	7
6	7
7	19
8	5
9	4
10	11
11	7
12	15
13	10
14	9
15	14
16	17
17	12
18	8
19	21
20	20
21	16
22	15
23	11
24	33
25	36
26	36
27	18
28	10
29	14
30	31
31	26
32	22
33	21
34	13
35	26
36	34
37	16
38	12
39	21
40	42
41	25
42	16
43	16
44	37
45	20
46	29
47	19
48	24
49	32
50	90
51	28
52	28
53	19
54	19
55	85
56	23
57	40
58	14
59	36
60	27
61	22
62	49
63	17
64	31
65	31
66	40
67	13
68	44
69	43
70	26
71	66
72	43
73	25
74	25
75	25
76	30
77	21
78	30
79	30
80	51
81	20
82	25
83	25
84	33
85	47
86	16
87	47
88	91
89	46
90	46
91	29
92	46
93	28

n	a(n)
1	2
2	5
3	3
4	6
5	7
6	7
7	19
8	5
9	4
10	11
11	7
12	15
13	10
14	9
15	14
16	17
17	12
18	8
19	21
20	20
21	16
22	15
23	11
24	33
25	36
26	36
27	18
28	10
29	14
30	31
31	26
32	22
33	21
34	13
35	26
36	34
37	16
38	12
39	21
40	42
41	25
42	16
43	16
44	37
45	20
46	29
47	19
48	24
49	32
50	90
51	28
52	28
53	19
54	19
55	85
56	23
57	40
58	14
59	36
60	27
61	22
62	49
63	17
64	31
65	31
66	40
67	13
68	44
69	43
70	26
71	66
72	43
73	25
74	25
75	25
76	30
77	21
78	30
79	30
80	51
81	20
82	25
83	25
84	33
85	47
86	16
87	47
88	91
89	46
90	46
91	29
92	46
93	28

n	a(n)
1	2
2	5
3	3
4	6
5	7
6	7
7	19
8	5
9	4
10	11
11	7
12	15
13	10
14	9
15	14
16	17
17	12
18	8
19	21
20	20
21	16
22	15
23	11
24	33
25	36
26	36
27	18
28	10
29	14
30	31
31	26
32	22
33	21
34	13
35	26
36	34
37	16
38	12
39	21
40	42
41	25
42	16
43	16
44	37
45	20
46	29
47	19
48	24
49	32
50	90
51	28
52	28
53	19
54	19
55	85
56	23
57	40
58	14
59	36
60	27
61	22
62	49
63	17
64	31
65	31
66	40
67	13
68	44
69	43
70	26
71	66
72	43
73	25
74	25
75	25
76	30
77	21
78	30
79	30
80	51
81	20
82	25
83	25
84	33
85	47
86	16
87	47
88	91
89	46
90	46
91	29
92	46
93	28