A075425 - cp's OEIS frontend

A075425 Number of steps to reach 1 starting with n and iterating the map n ->rad(n)-1, where rad(n) is the squarefree kernel of n (A007947).

n	a(n)
1	0
2	1
3	2
4	1
5	2
6	3
7	4
8	1
9	2
10	3
11	4
12	3
13	4
14	5
15	6
16	1
17	2
18	3
19	4
20	3
21	4
22	5
23	6
24	3
25	2
26	3
27	2
28	5
29	6
30	7
31	8
32	1
33	2
34	3
35	4
36	3
37	4
38	5
39	6
40	3
41	4
42	5
43	6
44	5
45	6
46	7
47	8
48	3
49	4
50	3
51	4
52	3
53	4
54	3
55	4
56	5
57	6
58	7
59	8
60	7
61	8
62	9
63	4
64	1
65	2
66	3
67	4
68	3
69	4
70	5
71	6
72	3
73	4
74	5
75	6
76	5
77	6
78	7
79	8
80	3
81	2
82	3
83	4
84	5
85	6
86	7
87	8
88	5
89	6
90	7
91	8
92	7
93	8
94	9
95	10
96	3
97	4
98	5
99	2
100	3
101	4
102	5
103	6
104	3

[0, 1, 2, 1, 2, 3, 4, 1, 2, 3, 4, 3, 4, 5, 6, 1, 2, 3, 4, 3, 4, 5, 6, 3, 2, 3, 2, 5, 6, 7, 8, 1, 2, 3, 4, 3, 4, 5, 6, 3, 4, 5, 6, 5, 6, 7, 8, 3, 4, 3, 4, 3, 4, 3, 4, 5, 6, 7, 8, 7, 8, 9, 4, 1, 2, 3, 4, 3, 4, 5, 6, 3, 4, 5, 6, 5, 6, 7, 8, 3, 2, 3, 4, 5, 6, 7, 8, 5, 6, 7, 8, 7, 8, 9, 10, 3, 4, 5, 2, 3, 4, 5, 6, 3]

cp's OEIS Frontend

A075425 Number of steps to reach 1 starting with n and iterating the map n ->rad(n)-1, where rad(n) is the squarefree kernel of n (A007947).

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	1
5	2
6	3
7	4
8	1
9	2
10	3
11	4
12	3
13	4
14	5
15	6
16	1
17	2
18	3
19	4
20	3
21	4
22	5
23	6
24	3
25	2
26	3
27	2
28	5
29	6
30	7
31	8
32	1
33	2
34	3
35	4
36	3
37	4
38	5
39	6
40	3
41	4
42	5
43	6
44	5
45	6
46	7
47	8
48	3
49	4
50	3
51	4
52	3
53	4
54	3
55	4
56	5
57	6
58	7
59	8
60	7
61	8
62	9
63	4
64	1
65	2
66	3
67	4
68	3
69	4
70	5
71	6
72	3
73	4
74	5
75	6
76	5
77	6
78	7
79	8
80	3
81	2
82	3
83	4
84	5
85	6
86	7
87	8
88	5
89	6
90	7
91	8
92	7
93	8
94	9
95	10
96	3
97	4
98	5
99	2
100	3
101	4
102	5
103	6
104	3

n	a(n)
1	0
2	1
3	2
4	1
5	2
6	3
7	4
8	1
9	2
10	3
11	4
12	3
13	4
14	5
15	6
16	1
17	2
18	3
19	4
20	3
21	4
22	5
23	6
24	3
25	2
26	3
27	2
28	5
29	6
30	7
31	8
32	1
33	2
34	3
35	4
36	3
37	4
38	5
39	6
40	3
41	4
42	5
43	6
44	5
45	6
46	7
47	8
48	3
49	4
50	3
51	4
52	3
53	4
54	3
55	4
56	5
57	6
58	7
59	8
60	7
61	8
62	9
63	4
64	1
65	2
66	3
67	4
68	3
69	4
70	5
71	6
72	3
73	4
74	5
75	6
76	5
77	6
78	7
79	8
80	3
81	2
82	3
83	4
84	5
85	6
86	7
87	8
88	5
89	6
90	7
91	8
92	7
93	8
94	9
95	10
96	3
97	4
98	5
99	2
100	3
101	4
102	5
103	6
104	3

n	a(n)
1	0
2	1
3	2
4	1
5	2
6	3
7	4
8	1
9	2
10	3
11	4
12	3
13	4
14	5
15	6
16	1
17	2
18	3
19	4
20	3
21	4
22	5
23	6
24	3
25	2
26	3
27	2
28	5
29	6
30	7
31	8
32	1
33	2
34	3
35	4
36	3
37	4
38	5
39	6
40	3
41	4
42	5
43	6
44	5
45	6
46	7
47	8
48	3
49	4
50	3
51	4
52	3
53	4
54	3
55	4
56	5
57	6
58	7
59	8
60	7
61	8
62	9
63	4
64	1
65	2
66	3
67	4
68	3
69	4
70	5
71	6
72	3
73	4
74	5
75	6
76	5
77	6
78	7
79	8
80	3
81	2
82	3
83	4
84	5
85	6
86	7
87	8
88	5
89	6
90	7
91	8
92	7
93	8
94	9
95	10
96	3
97	4
98	5
99	2
100	3
101	4
102	5
103	6
104	3