A130971 - cp's OEIS frontend

A130971 Smallest prime p, such that either |A000040(n)-p| or A000040(n)+p is of the form 2^k.

n	a(n)
1	2
2	2
3	3
4	3
5	3
6	3
7	13
8	3
9	7
10	3
11	23
12	5
13	23
14	11
15	17
16	11
17	5
18	3
19	3
20	7
21	41
22	47
23	19
24	73
25	31
26	37
27	71
28	43
29	19
30	97
31	131
32	3
33	73
34	11
35	107
36	23
37	29
38	131
39	89
40	83
41	163
42	53
43	127
44	191
45	59
46	71
47	83
48	191
49	29
50	101
51	23
52	17
53	113
54	5
55	193
56	7
57	13
58	239
59	149
60	277
61	229
62	37
63	179
64	307
65	199
66	61
67	181
68	353
69	283

[2, 2, 3, 3, 3, 3, 13, 3, 7, 3, 23, 5, 23, 11, 17, 11, 5, 3, 3, 7, 41, 47, 19, 73, 31, 37, 71, 43, 19, 97, 131, 3, 73, 11, 107, 23, 29, 131, 89, 83, 163, 53, 127, 191, 59, 71, 83, 191, 29, 101, 23, 17, 113, 5, 193, 7, 13, 239, 149, 277, 229, 37, 179, 307, 199, 61, 181, 353, 283]

cp's OEIS Frontend

A130971 Smallest prime p, such that either |A000040(n)-p| or A000040(n)+p is of the form 2^k.

Table of values

List of values

n	a(n)
1	2
2	2
3	3
4	3
5	3
6	3
7	13
8	3
9	7
10	3
11	23
12	5
13	23
14	11
15	17
16	11
17	5
18	3
19	3
20	7
21	41
22	47
23	19
24	73
25	31
26	37
27	71
28	43
29	19
30	97
31	131
32	3
33	73
34	11
35	107
36	23
37	29
38	131
39	89
40	83
41	163
42	53
43	127
44	191
45	59
46	71
47	83
48	191
49	29
50	101
51	23
52	17
53	113
54	5
55	193
56	7
57	13
58	239
59	149
60	277
61	229
62	37
63	179
64	307
65	199
66	61
67	181
68	353
69	283

n	a(n)
1	2
2	2
3	3
4	3
5	3
6	3
7	13
8	3
9	7
10	3
11	23
12	5
13	23
14	11
15	17
16	11
17	5
18	3
19	3
20	7
21	41
22	47
23	19
24	73
25	31
26	37
27	71
28	43
29	19
30	97
31	131
32	3
33	73
34	11
35	107
36	23
37	29
38	131
39	89
40	83
41	163
42	53
43	127
44	191
45	59
46	71
47	83
48	191
49	29
50	101
51	23
52	17
53	113
54	5
55	193
56	7
57	13
58	239
59	149
60	277
61	229
62	37
63	179
64	307
65	199
66	61
67	181
68	353
69	283

n	a(n)
1	2
2	2
3	3
4	3
5	3
6	3
7	13
8	3
9	7
10	3
11	23
12	5
13	23
14	11
15	17
16	11
17	5
18	3
19	3
20	7
21	41
22	47
23	19
24	73
25	31
26	37
27	71
28	43
29	19
30	97
31	131
32	3
33	73
34	11
35	107
36	23
37	29
38	131
39	89
40	83
41	163
42	53
43	127
44	191
45	59
46	71
47	83
48	191
49	29
50	101
51	23
52	17
53	113
54	5
55	193
56	7
57	13
58	239
59	149
60	277
61	229
62	37
63	179
64	307
65	199
66	61
67	181
68	353
69	283