A176494 - cp's OEIS frontend

A176494 Least m >= 1 for which |2^m - prime(n)| is prime.

n	a(n)
2	3
3	1
4	1
5	2
6	1
7	2
8	1
9	2
10	4
11	1
12	3
13	2
14	1
15	2
16	4
17	4
18	1
19	3
20	2
21	1
22	3
23	2
24	4
25	3
26	2
27	1
28	2
29	1
30	2
31	47
32	2
33	6
34	1
35	8
36	1
37	3
38	5
39	2
40	4
41	4
42	1
43	6
44	1
45	2
46	1
47	5
48	5
49	2
50	1
51	2
52	4
53	1
54	8
55	4
56	6
57	8
58	1
59	3
60	2
61	1
62	4
63	7
64	2
65	1
66	2
67	9
68	791
69	4
70	1
71	2
72	8
73	3
74	9
75	5
76	2
77	4
78	3
79	2
80	3
81	8
82	1
83	6
84	1
85	3
86	2
87	4
88	3
89	2
90	1
91	2
92	4
93	3
94	2
95	3

[3, 1, 1, 2, 1, 2, 1, 2, 4, 1, 3, 2, 1, 2, 4, 4, 1, 3, 2, 1, 3, 2, 4, 3, 2, 1, 2, 1, 2, 47, 2, 6, 1, 8, 1, 3, 5, 2, 4, 4, 1, 6, 1, 2, 1, 5, 5, 2, 1, 2, 4, 1, 8, 4, 6, 8, 1, 3, 2, 1, 4, 7, 2, 1, 2, 9, 791, 4, 1, 2, 8, 3, 9, 5, 2, 4, 3, 2, 3, 8, 1, 6, 1, 3, 2, 4, 3, 2, 1, 2, 4, 3, 2, 3]

cp's OEIS Frontend

A176494 Least m >= 1 for which |2^m - prime(n)| is prime.

Table of values

List of values

n	a(n)
2	3
3	1
4	1
5	2
6	1
7	2
8	1
9	2
10	4
11	1
12	3
13	2
14	1
15	2
16	4
17	4
18	1
19	3
20	2
21	1
22	3
23	2
24	4
25	3
26	2
27	1
28	2
29	1
30	2
31	47
32	2
33	6
34	1
35	8
36	1
37	3
38	5
39	2
40	4
41	4
42	1
43	6
44	1
45	2
46	1
47	5
48	5
49	2
50	1
51	2
52	4
53	1
54	8
55	4
56	6
57	8
58	1
59	3
60	2
61	1
62	4
63	7
64	2
65	1
66	2
67	9
68	791
69	4
70	1
71	2
72	8
73	3
74	9
75	5
76	2
77	4
78	3
79	2
80	3
81	8
82	1
83	6
84	1
85	3
86	2
87	4
88	3
89	2
90	1
91	2
92	4
93	3
94	2
95	3

n	a(n)
2	3
3	1
4	1
5	2
6	1
7	2
8	1
9	2
10	4
11	1
12	3
13	2
14	1
15	2
16	4
17	4
18	1
19	3
20	2
21	1
22	3
23	2
24	4
25	3
26	2
27	1
28	2
29	1
30	2
31	47
32	2
33	6
34	1
35	8
36	1
37	3
38	5
39	2
40	4
41	4
42	1
43	6
44	1
45	2
46	1
47	5
48	5
49	2
50	1
51	2
52	4
53	1
54	8
55	4
56	6
57	8
58	1
59	3
60	2
61	1
62	4
63	7
64	2
65	1
66	2
67	9
68	791
69	4
70	1
71	2
72	8
73	3
74	9
75	5
76	2
77	4
78	3
79	2
80	3
81	8
82	1
83	6
84	1
85	3
86	2
87	4
88	3
89	2
90	1
91	2
92	4
93	3
94	2
95	3

n	a(n)
2	3
3	1
4	1
5	2
6	1
7	2
8	1
9	2
10	4
11	1
12	3
13	2
14	1
15	2
16	4
17	4
18	1
19	3
20	2
21	1
22	3
23	2
24	4
25	3
26	2
27	1
28	2
29	1
30	2
31	47
32	2
33	6
34	1
35	8
36	1
37	3
38	5
39	2
40	4
41	4
42	1
43	6
44	1
45	2
46	1
47	5
48	5
49	2
50	1
51	2
52	4
53	1
54	8
55	4
56	6
57	8
58	1
59	3
60	2
61	1
62	4
63	7
64	2
65	1
66	2
67	9
68	791
69	4
70	1
71	2
72	8
73	3
74	9
75	5
76	2
77	4
78	3
79	2
80	3
81	8
82	1
83	6
84	1
85	3
86	2
87	4
88	3
89	2
90	1
91	2
92	4
93	3
94	2
95	3