A212037 - cp's OEIS frontend

A212037 The size of the set of numbers k>=0 such that all (2^n+k)2^n-1 are prime but only the last (largest) (2^n+k)2^n+1 is also an associated twin prime.

n	a(n)
1	1
2	6
3	1
4	4
5	2
6	2
7	2
8	24
9	6
10	2
11	28
12	7
13	16
14	47
15	29
16	6
17	41
18	16
19	3
20	17
21	32
22	10
23	10
24	23
25	14
26	15
27	52
28	4
29	13
30	20
31	23
32	4
33	84
34	26
35	88
36	50
37	20
38	35
39	51
40	44
41	41
42	87
43	1
44	142
45	13
46	188
47	107
48	162
49	91
50	96
51	197
52	4
53	148
54	71
55	9
56	66
57	97
58	41
59	10
60	9
61	152
62	234
63	48
64	104
65	144
66	40
67	18
68	45
69	52
70	204
71	21
72	49
73	51
74	9
75	102
76	13
77	31
78	108
79	88

[1, 6, 1, 4, 2, 2, 2, 24, 6, 2, 28, 7, 16, 47, 29, 6, 41, 16, 3, 17, 32, 10, 10, 23, 14, 15, 52, 4, 13, 20, 23, 4, 84, 26, 88, 50, 20, 35, 51, 44, 41, 87, 1, 142, 13, 188, 107, 162, 91, 96, 197, 4, 148, 71, 9, 66, 97, 41, 10, 9, 152, 234, 48, 104, 144, 40, 18, 45, 52, 204, 21, 49, 51, 9, 102, 13, 31, 108, 88]

cp's OEIS Frontend

A212037 The size of the set of numbers k>=0 such that all (2^n+k)2^n-1 are prime but only the last (largest) (2^n+k)2^n+1 is also an associated twin prime.

Table of values

List of values

n	a(n)
1	1
2	6
3	1
4	4
5	2
6	2
7	2
8	24
9	6
10	2
11	28
12	7
13	16
14	47
15	29
16	6
17	41
18	16
19	3
20	17
21	32
22	10
23	10
24	23
25	14
26	15
27	52
28	4
29	13
30	20
31	23
32	4
33	84
34	26
35	88
36	50
37	20
38	35
39	51
40	44
41	41
42	87
43	1
44	142
45	13
46	188
47	107
48	162
49	91
50	96
51	197
52	4
53	148
54	71
55	9
56	66
57	97
58	41
59	10
60	9
61	152
62	234
63	48
64	104
65	144
66	40
67	18
68	45
69	52
70	204
71	21
72	49
73	51
74	9
75	102
76	13
77	31
78	108
79	88

n	a(n)
1	1
2	6
3	1
4	4
5	2
6	2
7	2
8	24
9	6
10	2
11	28
12	7
13	16
14	47
15	29
16	6
17	41
18	16
19	3
20	17
21	32
22	10
23	10
24	23
25	14
26	15
27	52
28	4
29	13
30	20
31	23
32	4
33	84
34	26
35	88
36	50
37	20
38	35
39	51
40	44
41	41
42	87
43	1
44	142
45	13
46	188
47	107
48	162
49	91
50	96
51	197
52	4
53	148
54	71
55	9
56	66
57	97
58	41
59	10
60	9
61	152
62	234
63	48
64	104
65	144
66	40
67	18
68	45
69	52
70	204
71	21
72	49
73	51
74	9
75	102
76	13
77	31
78	108
79	88

cp's OEIS Frontend

A212037 The size of the set of numbers k>=0 such that all (2^n+k)*2^n-1 are prime but only the last (largest) (2^n+k)*2^n+1 is also an associated twin prime.

Table of values

List of values

A212037 The size of the set of numbers k>=0 such that all (2^n+k)2^n-1 are prime but only the last (largest) (2^n+k)2^n+1 is also an associated twin prime.

n	a(n)
1	1
2	6
3	1
4	4
5	2
6	2
7	2
8	24
9	6
10	2
11	28
12	7
13	16
14	47
15	29
16	6
17	41
18	16
19	3
20	17
21	32
22	10
23	10
24	23
25	14
26	15
27	52
28	4
29	13
30	20
31	23
32	4
33	84
34	26
35	88
36	50
37	20
38	35
39	51
40	44
41	41
42	87
43	1
44	142
45	13
46	188
47	107
48	162
49	91
50	96
51	197
52	4
53	148
54	71
55	9
56	66
57	97
58	41
59	10
60	9
61	152
62	234
63	48
64	104
65	144
66	40
67	18
68	45
69	52
70	204
71	21
72	49
73	51
74	9
75	102
76	13
77	31
78	108
79	88