A087891 - cp's OEIS frontend

A087891 Number of nonsquarefree terms in 3x+1 trajectory started at n.

n	a(n)
1	0
2	0
3	3
4	1
5	3
6	3
7	6
8	2
9	8
10	3
11	6
12	4
13	5
14	6
15	7
16	3
17	6
18	9
19	8
20	4
21	5
22	6
23	7
24	5
25	10
26	5
27	38
28	7
29	8
30	7
31	36
32	4
33	12
34	6
35	7
36	10
37	9
38	8
39	12
40	5
41	37
42	5
43	13
44	7
45	9
46	7
47	36
48	6
49	11
50	11
51	10
52	6
53	7
54	39
55	40
56	8
57	14
58	8
59	12
60	8
61	9
62	36
63	36
64	5
65	13
66	12
67	11
68	7
69	8
70	7
71	36
72	11
73	41
74	9
75	9
76	9
77	10
78	12
79	13
80	6
81	11
82	37
83	40
84	6
85	7
86	13
87	12
88	8
89	12

[0, 0, 3, 1, 3, 3, 6, 2, 8, 3, 6, 4, 5, 6, 7, 3, 6, 9, 8, 4, 5, 6, 7, 5, 10, 5, 38, 7, 8, 7, 36, 4, 12, 6, 7, 10, 9, 8, 12, 5, 37, 5, 13, 7, 9, 7, 36, 6, 11, 11, 10, 6, 7, 39, 40, 8, 14, 8, 12, 8, 9, 36, 36, 5, 13, 12, 11, 7, 8, 7, 36, 11, 41, 9, 9, 9, 10, 12, 13, 6, 11, 37, 40, 6, 7, 13, 12, 8, 12]

cp's OEIS Frontend

A087891 Number of nonsquarefree terms in 3x+1 trajectory started at n.

Table of values

List of values

n	a(n)
1	0
2	0
3	3
4	1
5	3
6	3
7	6
8	2
9	8
10	3
11	6
12	4
13	5
14	6
15	7
16	3
17	6
18	9
19	8
20	4
21	5
22	6
23	7
24	5
25	10
26	5
27	38
28	7
29	8
30	7
31	36
32	4
33	12
34	6
35	7
36	10
37	9
38	8
39	12
40	5
41	37
42	5
43	13
44	7
45	9
46	7
47	36
48	6
49	11
50	11
51	10
52	6
53	7
54	39
55	40
56	8
57	14
58	8
59	12
60	8
61	9
62	36
63	36
64	5
65	13
66	12
67	11
68	7
69	8
70	7
71	36
72	11
73	41
74	9
75	9
76	9
77	10
78	12
79	13
80	6
81	11
82	37
83	40
84	6
85	7
86	13
87	12
88	8
89	12

n	a(n)
1	0
2	0
3	3
4	1
5	3
6	3
7	6
8	2
9	8
10	3
11	6
12	4
13	5
14	6
15	7
16	3
17	6
18	9
19	8
20	4
21	5
22	6
23	7
24	5
25	10
26	5
27	38
28	7
29	8
30	7
31	36
32	4
33	12
34	6
35	7
36	10
37	9
38	8
39	12
40	5
41	37
42	5
43	13
44	7
45	9
46	7
47	36
48	6
49	11
50	11
51	10
52	6
53	7
54	39
55	40
56	8
57	14
58	8
59	12
60	8
61	9
62	36
63	36
64	5
65	13
66	12
67	11
68	7
69	8
70	7
71	36
72	11
73	41
74	9
75	9
76	9
77	10
78	12
79	13
80	6
81	11
82	37
83	40
84	6
85	7
86	13
87	12
88	8
89	12

n	a(n)
1	0
2	0
3	3
4	1
5	3
6	3
7	6
8	2
9	8
10	3
11	6
12	4
13	5
14	6
15	7
16	3
17	6
18	9
19	8
20	4
21	5
22	6
23	7
24	5
25	10
26	5
27	38
28	7
29	8
30	7
31	36
32	4
33	12
34	6
35	7
36	10
37	9
38	8
39	12
40	5
41	37
42	5
43	13
44	7
45	9
46	7
47	36
48	6
49	11
50	11
51	10
52	6
53	7
54	39
55	40
56	8
57	14
58	8
59	12
60	8
61	9
62	36
63	36
64	5
65	13
66	12
67	11
68	7
69	8
70	7
71	36
72	11
73	41
74	9
75	9
76	9
77	10
78	12
79	13
80	6
81	11
82	37
83	40
84	6
85	7
86	13
87	12
88	8
89	12