A306863 - cp's OEIS frontend

A306863 a(n) is the number of primes between the n-th and (n+1)-st odd composite numbers.

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

[2, 2, 1, 0, 2, 0, 1, 2, 1, 0, 1, 0, 2, 0, 1, 2, 0, 1, 1, 0, 1, 0, 0, 1, 2, 2, 1, 0, 0, 0, 0, 0, 1, 1, 0, 2, 0, 0, 0, 2, 0, 1, 0, 1, 1, 0, 1, 0, 2, 0, 0, 0, 2, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 2, 1, 0, 2, 0, 0, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 2, 0, 0, 0, 1, 0, 0]

cp's OEIS Frontend

A306863 a(n) is the number of primes between the n-th and (n+1)-st odd composite numbers.

Table of values

List of values

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

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

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