A065861 - cp's OEIS frontend

A065861 Remainder when the n-th composite number is divided by pi(n), the number of primes not exceeding n.

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

[0, 0, 1, 1, 0, 2, 3, 0, 2, 0, 1, 4, 0, 1, 2, 6, 0, 6, 0, 1, 2, 8, 0, 2, 3, 4, 6, 4, 5, 2, 4, 5, 6, 7, 8, 6, 7, 8, 9, 6, 8, 6, 7, 8, 9, 6, 8, 9, 10, 12, 14, 11, 12, 13, 14, 0, 1, 14, 16, 13, 14, 15, 16, 0, 1, 16, 17, 18, 0, 16, 18, 15, 16, 18, 20, 0, 1, 20, 0, 1, 2, 22, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4]

cp's OEIS Frontend

A065861 Remainder when the n-th composite number is divided by pi(n), the number of primes not exceeding n.

Table of values

List of values

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

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

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