A073426 - cp's OEIS frontend

A073426 Number of primes between n-th prime and n-th composite or number of primes that are >=Min[prime(n),c(n)] and are < Max[prime(n),c(n)].

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

[2, 2, 2, 1, 1, 1, 1, 2, 3, 3, 3, 4, 5, 5, 6, 7, 8, 9, 9, 9, 10, 11, 12, 13, 13, 14, 15, 15, 15, 16, 17, 17, 18, 19, 20, 21, 21, 22, 23, 24, 25, 25, 25, 26, 27, 28, 29, 29, 30, 31, 31, 31, 32, 33, 34, 35, 35, 36, 37, 37, 38, 39, 40, 41, 41, 42, 43, 44, 45, 46, 47, 47, 48, 49, 49, 49]

cp's OEIS Frontend

A073426 Number of primes between n-th prime and n-th composite or number of primes that are >=Min[prime(n),c(n)] and are < Max[prime(n),c(n)].

Table of values

List of values

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

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

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