A350805 - cp's OEIS frontend

A350805 Number of iterations to reach 1 or a repeated value when starting at n for the map: x -> Sum_{prime factors of x} A006370(x), where A006370 is the Collatz 3x+1 map.

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

[0, 1, 35, 2, 4, 11, 31, 36, 9, 34, 10, 1, 19, 32, 5, 3, 33, 7, 17, 8, 6, 30, 31, 20, 6, 5, 2, 21, 9, 2, 30, 5, 30, 9, 30, 30, 7, 30, 30, 18, 5, 31, 30, 30, 31, 38, 38, 33, 31, 30, 33, 32, 8, 30, 31, 7, 30, 16, 30, 22, 36, 32, 32, 12, 8, 32, 34, 30, 10, 30, 37, 32, 34, 30, 32, 23, 8, 34, 34]

cp's OEIS Frontend

A350805 Number of iterations to reach 1 or a repeated value when starting at n for the map: x -> Sum_{prime factors of x} A006370(x), where A006370 is the Collatz 3x+1 map.

Table of values

List of values

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

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

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