A232992 - cp's OEIS frontend

A232992 Let b(i) = A134204(i) and c(n) = A133242(n); a(n) is the number of primes p <= c(n) such that p is not in {b(0), b(1), ..., b(c(n)-1)}.

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

[1, 1, 2, 1, 1, 2, 2, 3, 2, 1, 2, 3, 6, 7, 6, 7, 7, 7, 6, 5, 7, 12, 11, 10, 10, 9, 10, 12, 11, 12, 11, 10, 9, 9, 8, 8, 8, 9, 8, 8, 8, 7, 10, 16, 16, 16, 19, 18, 17, 16, 15, 15, 16, 16, 17, 16, 15, 16, 16, 19, 19, 20, 20, 19, 18, 17, 16, 17, 20, 19, 20, 19, 18, 18, 19, 23, 24, 23, 25, 24, 25, 27, 26, 27, 27, 26, 25, 25]

cp's OEIS Frontend

A232992 Let b(i) = A134204(i) and c(n) = A133242(n); a(n) is the number of primes p <= c(n) such that p is not in {b(0), b(1), ..., b(c(n)-1)}.

Table of values

List of values

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

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

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