A378160 - cp's OEIS frontend

A378160 The number of distinct prime factors of !n = A000166(n).

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

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

cp's OEIS Frontend

A378160 The number of distinct prime factors of !n = A000166(n).

Table of values

List of values

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

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

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