A082926 - cp's OEIS frontend

A082926 Difference between the number of primes equal to or less than n and (1 + the number of nonsquarefree numbers equal to or less than n).

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

[1, 0, 1, 0, 1, 1, 2, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 2, 3, 2, 2, 1, 2, 2, 2, 2, 3, 2, 2, 2, 3, 2, 2, 1, 2, 3, 3, 2, 3, 4, 5, 5, 6, 5, 6, 6, 7, 7, 7, 6, 7, 6, 6, 7, 8, 8, 8, 7, 8, 8, 8, 7, 8, 7, 7, 8, 9, 9, 9, 8, 9, 10, 10, 9, 10, 10, 10, 10, 11, 10, 11, 11, 12, 12, 12, 12, 13, 12]

cp's OEIS Frontend

A082926 Difference between the number of primes equal to or less than n and (1 + the number of nonsquarefree numbers equal to or less than n).

Table of values

List of values

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

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

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