A364334 - cp's OEIS frontend

A364334 a(2) = 0; a(n) = a(n-1) + 1 if n is an odd prime; otherwise a(n) = max{a(k) : k is divisor of n, 1 < k < n}.

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

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

cp's OEIS Frontend

A364334 a(2) = 0; a(n) = a(n-1) + 1 if n is an odd prime; otherwise a(n) = max{a(k) : k is divisor of n, 1 < k < n}.

Table of values

List of values

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

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

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