A379311 - cp's OEIS frontend

A379311 Number of prime indices of n that are 1 or prime.

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

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

cp's OEIS Frontend

A379311 Number of prime indices of n that are 1 or prime.

Table of values

List of values

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

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

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