A238966 - cp's OEIS frontend

A238966 The number of distinct primes in divisor lattice in canonical order.

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

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

cp's OEIS Frontend

A238966 The number of distinct primes in divisor lattice in canonical order.

Table of values

List of values

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

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

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