A115206 - cp's OEIS frontend

A115206 Least number d such that prime(n) -/+ 2d form a prime pair; prime(n) being the n-th prime.

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

[1, 2, 3, 3, 3, 6, 3, 6, 6, 3, 6, 12, 3, 3, 6, 9, 3, 6, 3, 9, 12, 9, 15, 6, 3, 3, 15, 12, 12, 9, 15, 6, 9, 6, 3, 18, 15, 3, 6, 9, 21, 15, 15, 21, 6, 30, 15, 24, 3, 6, 15, 6, 3, 3, 6, 21, 3, 6, 27, 12, 12, 21, 18, 18, 9, 15, 18, 9, 3, 21, 15, 3, 15, 18, 15, 12, 9, 6, 15, 6, 6, 12, 9, 12, 9, 42, 9]

cp's OEIS Frontend

A115206 Least number d such that prime(n) -/+ 2d form a prime pair; prime(n) being the n-th prime.

Table of values

List of values

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

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

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