A094076 - cp's OEIS frontend

A094076 Smallest k such that prime(n) + 2^k is prime, or -1 if no such prime exists.

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	3
10	1
11	4
12	2
13	1
14	2
15	5
16	3
17	1
18	8
19	2
20	1
21	4
22	2
23	7
24	3
25	2
26	1
27	2
28	1
29	2
30	7
31	2
32	3
33	1
34	10
35	1
36	4
37	4
38	2
39	5
40	3
41	1
42	4
43	1
44	2
45	1
46	6
47	4
48	2
49	1
50	2
51	3
52	1
53	4
54	5
55	9
56	3
57	1
58	20
59	2
60	1
61	6
62	7
63	2
64	1
65	2
66	5
67	4
68	4
69	1
70	2
71	27
72	3
73	4
74	4
75	2
76	15
77	3
78	2
79	3
80	10
81	1
82	8
83	1
84	4
85	2
86	7
87	3
88	2
89	1
90	2
91	5
92	3
93	2
94	3
95	2
96	7
97	5
98	1
99	6
100	4
101	4
102	9
103	3
104	1

[0, 1, 1, 2, 1, 2, 1, 2, 3, 1, 4, 2, 1, 2, 5, 3, 1, 8, 2, 1, 4, 2, 7, 3, 2, 1, 2, 1, 2, 7, 2, 3, 1, 10, 1, 4, 4, 2, 5, 3, 1, 4, 1, 2, 1, 6, 4, 2, 1, 2, 3, 1, 4, 5, 9, 3, 1, 20, 2, 1, 6, 7, 2, 1, 2, 5, 4, 4, 1, 2, 27, 3, 4, 4, 2, 15, 3, 2, 3, 10, 1, 8, 1, 4, 2, 7, 3, 2, 1, 2, 5, 3, 2, 3, 2, 7, 5, 1, 6, 4, 4, 9, 3, 1]

cp's OEIS Frontend

A094076 Smallest k such that prime(n) + 2^k is prime, or -1 if no such prime exists.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	3
10	1
11	4
12	2
13	1
14	2
15	5
16	3
17	1
18	8
19	2
20	1
21	4
22	2
23	7
24	3
25	2
26	1
27	2
28	1
29	2
30	7
31	2
32	3
33	1
34	10
35	1
36	4
37	4
38	2
39	5
40	3
41	1
42	4
43	1
44	2
45	1
46	6
47	4
48	2
49	1
50	2
51	3
52	1
53	4
54	5
55	9
56	3
57	1
58	20
59	2
60	1
61	6
62	7
63	2
64	1
65	2
66	5
67	4
68	4
69	1
70	2
71	27
72	3
73	4
74	4
75	2
76	15
77	3
78	2
79	3
80	10
81	1
82	8
83	1
84	4
85	2
86	7
87	3
88	2
89	1
90	2
91	5
92	3
93	2
94	3
95	2
96	7
97	5
98	1
99	6
100	4
101	4
102	9
103	3
104	1

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	3
10	1
11	4
12	2
13	1
14	2
15	5
16	3
17	1
18	8
19	2
20	1
21	4
22	2
23	7
24	3
25	2
26	1
27	2
28	1
29	2
30	7
31	2
32	3
33	1
34	10
35	1
36	4
37	4
38	2
39	5
40	3
41	1
42	4
43	1
44	2
45	1
46	6
47	4
48	2
49	1
50	2
51	3
52	1
53	4
54	5
55	9
56	3
57	1
58	20
59	2
60	1
61	6
62	7
63	2
64	1
65	2
66	5
67	4
68	4
69	1
70	2
71	27
72	3
73	4
74	4
75	2
76	15
77	3
78	2
79	3
80	10
81	1
82	8
83	1
84	4
85	2
86	7
87	3
88	2
89	1
90	2
91	5
92	3
93	2
94	3
95	2
96	7
97	5
98	1
99	6
100	4
101	4
102	9
103	3
104	1

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	3
10	1
11	4
12	2
13	1
14	2
15	5
16	3
17	1
18	8
19	2
20	1
21	4
22	2
23	7
24	3
25	2
26	1
27	2
28	1
29	2
30	7
31	2
32	3
33	1
34	10
35	1
36	4
37	4
38	2
39	5
40	3
41	1
42	4
43	1
44	2
45	1
46	6
47	4
48	2
49	1
50	2
51	3
52	1
53	4
54	5
55	9
56	3
57	1
58	20
59	2
60	1
61	6
62	7
63	2
64	1
65	2
66	5
67	4
68	4
69	1
70	2
71	27
72	3
73	4
74	4
75	2
76	15
77	3
78	2
79	3
80	10
81	1
82	8
83	1
84	4
85	2
86	7
87	3
88	2
89	1
90	2
91	5
92	3
93	2
94	3
95	2
96	7
97	5
98	1
99	6
100	4
101	4
102	9
103	3
104	1