A209266 - cp's OEIS frontend

A209266 a(n) is the number of 3-prime arithmetic progression prime chains surrounding the n-th prime number with 5-smooth intervals.

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

[0, 0, 1, 1, 2, 2, 2, 1, 3, 3, 1, 3, 3, 4, 3, 5, 4, 2, 5, 4, 4, 4, 4, 3, 3, 6, 6, 4, 4, 3, 4, 5, 6, 3, 6, 5, 4, 5, 5, 6, 4, 3, 4, 5, 5, 2, 5, 4, 6, 4, 6, 6, 3, 7, 5, 7, 6, 4, 7, 6, 5, 5, 7, 5, 4, 5, 8, 6, 7, 6, 8, 6, 7, 9, 4, 6, 5, 5, 8, 3, 6, 6, 5, 4, 6, 5, 7, 7, 8]

cp's OEIS Frontend

A209266 a(n) is the number of 3-prime arithmetic progression prime chains surrounding the n-th prime number with 5-smooth intervals.

Table of values

List of values

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

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

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