A100014 - cp's OEIS frontend

A100014 Least a(n) such that a(n)2^n(2^n-1)+1 is prime.

n	a(n)
1	1
2	1
3	2
4	1
5	6
6	3
7	5
8	12
9	3
10	5
11	8
12	6
13	5
14	3
15	18
16	8
17	41
18	5
19	11
20	14
21	66
22	8
23	2
24	9
25	18
26	8
27	21
28	12
29	30
30	16
31	6
32	1
33	6
34	8
35	33
36	2
37	53
38	23
39	2
40	5
41	21
42	15
43	6
44	12
45	20
46	5
47	5
48	28
49	53
50	80
51	11
52	53
53	9
54	5
55	56
56	2
57	120
58	5
59	23
60	16
61	9
62	8
63	5
64	9
65	24
66	25
67	62
68	131
69	41
70	51
71	12
72	3
73	99
74	56
75	2
76	37
77	155
78	3
79	23
80	55
81	29
82	9
83	2
84	33

[1, 1, 2, 1, 6, 3, 5, 12, 3, 5, 8, 6, 5, 3, 18, 8, 41, 5, 11, 14, 66, 8, 2, 9, 18, 8, 21, 12, 30, 16, 6, 1, 6, 8, 33, 2, 53, 23, 2, 5, 21, 15, 6, 12, 20, 5, 5, 28, 53, 80, 11, 53, 9, 5, 56, 2, 120, 5, 23, 16, 9, 8, 5, 9, 24, 25, 62, 131, 41, 51, 12, 3, 99, 56, 2, 37, 155, 3, 23, 55, 29, 9, 2, 33]

cp's OEIS Frontend

A100014 Least a(n) such that a(n)2^n(2^n-1)+1 is prime.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	6
6	3
7	5
8	12
9	3
10	5
11	8
12	6
13	5
14	3
15	18
16	8
17	41
18	5
19	11
20	14
21	66
22	8
23	2
24	9
25	18
26	8
27	21
28	12
29	30
30	16
31	6
32	1
33	6
34	8
35	33
36	2
37	53
38	23
39	2
40	5
41	21
42	15
43	6
44	12
45	20
46	5
47	5
48	28
49	53
50	80
51	11
52	53
53	9
54	5
55	56
56	2
57	120
58	5
59	23
60	16
61	9
62	8
63	5
64	9
65	24
66	25
67	62
68	131
69	41
70	51
71	12
72	3
73	99
74	56
75	2
76	37
77	155
78	3
79	23
80	55
81	29
82	9
83	2
84	33

n	a(n)
1	1
2	1
3	2
4	1
5	6
6	3
7	5
8	12
9	3
10	5
11	8
12	6
13	5
14	3
15	18
16	8
17	41
18	5
19	11
20	14
21	66
22	8
23	2
24	9
25	18
26	8
27	21
28	12
29	30
30	16
31	6
32	1
33	6
34	8
35	33
36	2
37	53
38	23
39	2
40	5
41	21
42	15
43	6
44	12
45	20
46	5
47	5
48	28
49	53
50	80
51	11
52	53
53	9
54	5
55	56
56	2
57	120
58	5
59	23
60	16
61	9
62	8
63	5
64	9
65	24
66	25
67	62
68	131
69	41
70	51
71	12
72	3
73	99
74	56
75	2
76	37
77	155
78	3
79	23
80	55
81	29
82	9
83	2
84	33

cp's OEIS Frontend

A100014 Least a(n) such that a(n)*2^n*(2^n-1)+1 is prime.

Table of values

List of values

A100014 Least a(n) such that a(n)2^n(2^n-1)+1 is prime.

n	a(n)
1	1
2	1
3	2
4	1
5	6
6	3
7	5
8	12
9	3
10	5
11	8
12	6
13	5
14	3
15	18
16	8
17	41
18	5
19	11
20	14
21	66
22	8
23	2
24	9
25	18
26	8
27	21
28	12
29	30
30	16
31	6
32	1
33	6
34	8
35	33
36	2
37	53
38	23
39	2
40	5
41	21
42	15
43	6
44	12
45	20
46	5
47	5
48	28
49	53
50	80
51	11
52	53
53	9
54	5
55	56
56	2
57	120
58	5
59	23
60	16
61	9
62	8
63	5
64	9
65	24
66	25
67	62
68	131
69	41
70	51
71	12
72	3
73	99
74	56
75	2
76	37
77	155
78	3
79	23
80	55
81	29
82	9
83	2
84	33