A323076 - cp's OEIS frontend

A323076 Number of iterations of map x -> 1+(x-(largest divisor d < x)), starting from x=n, needed to reach a fixed point, which is always either a prime or 1.

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

[0, 0, 0, 1, 0, 2, 0, 1, 1, 3, 0, 1, 0, 2, 1, 2, 0, 4, 0, 1, 2, 2, 0, 1, 3, 3, 1, 2, 0, 3, 0, 1, 1, 5, 1, 1, 0, 2, 2, 3, 0, 3, 0, 1, 1, 2, 0, 4, 1, 4, 2, 2, 0, 3, 2, 1, 3, 4, 0, 1, 0, 2, 1, 2, 1, 6, 0, 2, 1, 2, 0, 1, 0, 3, 3, 3, 1, 4, 0, 1, 3, 4, 0, 1, 2, 2, 1, 2, 0, 3, 1, 1, 2, 5, 2, 2, 0, 5, 1, 3, 0, 3, 0, 1, 1]

cp's OEIS Frontend

A323076 Number of iterations of map x -> 1+(x-(largest divisor d < x)), starting from x=n, needed to reach a fixed point, which is always either a prime or 1.

Table of values

List of values

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

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

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