A214499 - cp's OEIS frontend

A214499 The size of the set of numbers k>=0 such that all (3^n-k)3^n-1 are prime but only the last (largest) (3^n-k)3^n+1 is also an associated twin prime.

n	a(n)
1	1
2	1
3	4
4	4
5	1
6	1
7	2
8	3
9	4
10	6
11	4
12	6
13	4
14	11
15	3
16	10
17	6
18	9
19	4
20	18
21	30
22	16
23	8
24	29
25	5
26	32
27	21
28	15
29	45
30	5
31	97
32	10
33	36
34	3
35	33
36	35
37	55
38	20
39	54
40	25
41	30
42	30
43	36
44	8
45	38
46	30
47	16
48	6
49	3
50	20
51	10
52	35
53	36
54	2
55	84
56	20
57	52
58	85
59	25
60	25
61	70
62	46
63	15
64	53
65	6
66	103
67	11
68	27
69	87
70	15
71	42
72	14

[1, 1, 4, 4, 1, 1, 2, 3, 4, 6, 4, 6, 4, 11, 3, 10, 6, 9, 4, 18, 30, 16, 8, 29, 5, 32, 21, 15, 45, 5, 97, 10, 36, 3, 33, 35, 55, 20, 54, 25, 30, 30, 36, 8, 38, 30, 16, 6, 3, 20, 10, 35, 36, 2, 84, 20, 52, 85, 25, 25, 70, 46, 15, 53, 6, 103, 11, 27, 87, 15, 42, 14]

cp's OEIS Frontend

A214499 The size of the set of numbers k>=0 such that all (3^n-k)3^n-1 are prime but only the last (largest) (3^n-k)3^n+1 is also an associated twin prime.

Table of values

List of values

n	a(n)
1	1
2	1
3	4
4	4
5	1
6	1
7	2
8	3
9	4
10	6
11	4
12	6
13	4
14	11
15	3
16	10
17	6
18	9
19	4
20	18
21	30
22	16
23	8
24	29
25	5
26	32
27	21
28	15
29	45
30	5
31	97
32	10
33	36
34	3
35	33
36	35
37	55
38	20
39	54
40	25
41	30
42	30
43	36
44	8
45	38
46	30
47	16
48	6
49	3
50	20
51	10
52	35
53	36
54	2
55	84
56	20
57	52
58	85
59	25
60	25
61	70
62	46
63	15
64	53
65	6
66	103
67	11
68	27
69	87
70	15
71	42
72	14

n	a(n)
1	1
2	1
3	4
4	4
5	1
6	1
7	2
8	3
9	4
10	6
11	4
12	6
13	4
14	11
15	3
16	10
17	6
18	9
19	4
20	18
21	30
22	16
23	8
24	29
25	5
26	32
27	21
28	15
29	45
30	5
31	97
32	10
33	36
34	3
35	33
36	35
37	55
38	20
39	54
40	25
41	30
42	30
43	36
44	8
45	38
46	30
47	16
48	6
49	3
50	20
51	10
52	35
53	36
54	2
55	84
56	20
57	52
58	85
59	25
60	25
61	70
62	46
63	15
64	53
65	6
66	103
67	11
68	27
69	87
70	15
71	42
72	14

cp's OEIS Frontend

A214499 The size of the set of numbers k>=0 such that all (3^n-k)*3^n-1 are prime but only the last (largest) (3^n-k)*3^n+1 is also an associated twin prime.

Table of values

List of values

A214499 The size of the set of numbers k>=0 such that all (3^n-k)3^n-1 are prime but only the last (largest) (3^n-k)3^n+1 is also an associated twin prime.

n	a(n)
1	1
2	1
3	4
4	4
5	1
6	1
7	2
8	3
9	4
10	6
11	4
12	6
13	4
14	11
15	3
16	10
17	6
18	9
19	4
20	18
21	30
22	16
23	8
24	29
25	5
26	32
27	21
28	15
29	45
30	5
31	97
32	10
33	36
34	3
35	33
36	35
37	55
38	20
39	54
40	25
41	30
42	30
43	36
44	8
45	38
46	30
47	16
48	6
49	3
50	20
51	10
52	35
53	36
54	2
55	84
56	20
57	52
58	85
59	25
60	25
61	70
62	46
63	15
64	53
65	6
66	103
67	11
68	27
69	87
70	15
71	42
72	14