A255326 - cp's OEIS frontend

A255326 a(n) gives the number of steps needed to reach zero, when we start from x = n and repeatedly subtract x's squarefree kernel (A007947(x)) from it.

n	a(n)
0	0
1	1
2	1
3	1
4	2
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	1
14	1
15	1
16	2
17	1
18	3
19	1
20	2
21	1
22	1
23	1
24	4
25	3
26	1
27	5
28	2
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	1
39	1
40	2
41	1
42	1
43	1
44	2
45	2
46	1
47	1
48	2
49	2
50	3
51	1
52	2
53	1
54	3
55	1
56	2
57	1
58	1
59	1
60	2
61	1
62	1
63	2
64	2
65	1
66	1
67	1
68	2
69	1
70	1
71	1
72	2
73	1
74	1
75	3
76	2
77	1
78	1
79	1
80	2
81	2
82	1
83	1
84	2
85	1
86	1
87	1
88	2
89	1
90	3
91	1
92	2
93	1
94	1
95	1
96	4
97	1
98	3
99	2
100	4
101	1
102	1
103	1
104	2
105	1
106	1
107	1
108	2
109	1
110	1
111	1
112	4
113	1
114	1
115	1
116	2
117	2
118	1
119	1
120	4

[0, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 1, 1, 1, 4, 3, 1, 5, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 2, 2, 3, 1, 2, 1, 3, 1, 2, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 1, 1, 1, 4, 1, 3, 2, 4, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 4, 1, 1, 1, 2, 2, 1, 1, 4]

cp's OEIS Frontend

A255326 a(n) gives the number of steps needed to reach zero, when we start from x = n and repeatedly subtract x's squarefree kernel (A007947(x)) from it.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	1
4	2
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	1
14	1
15	1
16	2
17	1
18	3
19	1
20	2
21	1
22	1
23	1
24	4
25	3
26	1
27	5
28	2
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	1
39	1
40	2
41	1
42	1
43	1
44	2
45	2
46	1
47	1
48	2
49	2
50	3
51	1
52	2
53	1
54	3
55	1
56	2
57	1
58	1
59	1
60	2
61	1
62	1
63	2
64	2
65	1
66	1
67	1
68	2
69	1
70	1
71	1
72	2
73	1
74	1
75	3
76	2
77	1
78	1
79	1
80	2
81	2
82	1
83	1
84	2
85	1
86	1
87	1
88	2
89	1
90	3
91	1
92	2
93	1
94	1
95	1
96	4
97	1
98	3
99	2
100	4
101	1
102	1
103	1
104	2
105	1
106	1
107	1
108	2
109	1
110	1
111	1
112	4
113	1
114	1
115	1
116	2
117	2
118	1
119	1
120	4

n	a(n)
0	0
1	1
2	1
3	1
4	2
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	1
14	1
15	1
16	2
17	1
18	3
19	1
20	2
21	1
22	1
23	1
24	4
25	3
26	1
27	5
28	2
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	1
39	1
40	2
41	1
42	1
43	1
44	2
45	2
46	1
47	1
48	2
49	2
50	3
51	1
52	2
53	1
54	3
55	1
56	2
57	1
58	1
59	1
60	2
61	1
62	1
63	2
64	2
65	1
66	1
67	1
68	2
69	1
70	1
71	1
72	2
73	1
74	1
75	3
76	2
77	1
78	1
79	1
80	2
81	2
82	1
83	1
84	2
85	1
86	1
87	1
88	2
89	1
90	3
91	1
92	2
93	1
94	1
95	1
96	4
97	1
98	3
99	2
100	4
101	1
102	1
103	1
104	2
105	1
106	1
107	1
108	2
109	1
110	1
111	1
112	4
113	1
114	1
115	1
116	2
117	2
118	1
119	1
120	4

n	a(n)
0	0
1	1
2	1
3	1
4	2
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	2
13	1
14	1
15	1
16	2
17	1
18	3
19	1
20	2
21	1
22	1
23	1
24	4
25	3
26	1
27	5
28	2
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	1
39	1
40	2
41	1
42	1
43	1
44	2
45	2
46	1
47	1
48	2
49	2
50	3
51	1
52	2
53	1
54	3
55	1
56	2
57	1
58	1
59	1
60	2
61	1
62	1
63	2
64	2
65	1
66	1
67	1
68	2
69	1
70	1
71	1
72	2
73	1
74	1
75	3
76	2
77	1
78	1
79	1
80	2
81	2
82	1
83	1
84	2
85	1
86	1
87	1
88	2
89	1
90	3
91	1
92	2
93	1
94	1
95	1
96	4
97	1
98	3
99	2
100	4
101	1
102	1
103	1
104	2
105	1
106	1
107	1
108	2
109	1
110	1
111	1
112	4
113	1
114	1
115	1
116	2
117	2
118	1
119	1
120	4