A329243 - cp's OEIS frontend

A329243 a(n) = Pi(8,3)(prime(n)) + Pi(8,5)(prime(n)) + Pi(8,7)(prime(n)) - 3Pi(8,1)(prime(n)), where Pi(a,b)(x) denotes the number of primes in the arithmetic progression ak + b less than or equal to x.

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

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

cp's OEIS Frontend

A329243 a(n) = Pi(8,3)(prime(n)) + Pi(8,5)(prime(n)) + Pi(8,7)(prime(n)) - 3Pi(8,1)(prime(n)), where Pi(a,b)(x) denotes the number of primes in the arithmetic progression ak + b less than or equal to x.

Table of values

List of values

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

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

cp's OEIS Frontend

A329243 a(n) = Pi(8,3)(prime(n)) + Pi(8,5)(prime(n)) + Pi(8,7)(prime(n)) - 3*Pi(8,1)(prime(n)), where Pi(a,b)(x) denotes the number of primes in the arithmetic progression a*k + b less than or equal to x.

Table of values

List of values

A329243 a(n) = Pi(8,3)(prime(n)) + Pi(8,5)(prime(n)) + Pi(8,7)(prime(n)) - 3Pi(8,1)(prime(n)), where Pi(a,b)(x) denotes the number of primes in the arithmetic progression ak + b less than or equal to x.

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