A107058 - cp's OEIS frontend

A107058 a(n) = smallest number m>0 such that prime(n)*prime(n+1)-m is a prime.

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

[1, 2, 4, 4, 4, 10, 6, 4, 6, 12, 18, 6, 4, 4, 14, 6, 6, 8, 6, 4, 18, 4, 18, 4, 6, 4, 18, 6, 16, 4, 4, 8, 6, 4, 16, 18, 2, 10, 12, 18, 18, 22, 6, 10, 4, 6, 2, 22, 6, 4, 6, 6, 34, 8, 2, 18, 6, 26, 24, 30, 6, 12, 6, 16, 30, 10, 8, 6, 22, 6, 8, 4, 2, 8, 18, 26, 10, 4, 12, 30, 10, 12, 4, 24, 6, 6, 6]

cp's OEIS Frontend

A107058 a(n) = smallest number m>0 such that prime(n)*prime(n+1)-m is a prime.

Table of values

List of values

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

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

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