A349325 - cp's OEIS frontend

A349325 Number of times the Collatz plot started at n crosses the y = n line, or -1 if the number of crossings is infinite.

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

[1, 1, 2, 1, 2, 3, 4, 1, 4, 1, 2, 1, 2, 5, 2, 1, 4, 5, 6, 1, 2, 3, 2, 1, 6, 1, 4, 1, 2, 3, 4, 1, 6, 1, 2, 1, 2, 3, 4, 1, 6, 1, 4, 1, 2, 3, 4, 1, 4, 1, 2, 1, 2, 7, 6, 1, 6, 1, 2, 3, 4, 7, 6, 1, 4, 1, 2, 1, 2, 3, 6, 1, 10, 1, 2, 1, 2, 5, 2, 1, 4, 5, 6, 1, 2, 3, 2]

cp's OEIS Frontend

A349325 Number of times the Collatz plot started at n crosses the y = n line, or -1 if the number of crossings is infinite.

Table of values

List of values

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

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

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