A082720 - cp's OEIS frontend

A082720 Digit lengths for which there exist plateau or depression primes of the general form a(10^m-1)/9 +- b(10^(m-1)+1).

n	a(n)
0	3
1	5
2	7
3	9
4	11
5	13
6	15
7	17
8	19
9	21
10	23
11	29
12	31
13	33
14	37
15	41
16	49
17	53
18	55
19	59
20	61
21	65
22	67
23	69
24	73
25	75
26	83
27	85
28	87
29	93
30	95
31	97
32	101
33	103
34	105
35	111
36	113
37	115
38	117
39	121
40	127
41	129
42	141
43	157
44	161
45	171
46	193
47	201
48	205
49	209
50	231
51	247
52	291
53	323
54	343
55	351
56	353
57	361
58	367
59	401

[3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 29, 31, 33, 37, 41, 49, 53, 55, 59, 61, 65, 67, 69, 73, 75, 83, 85, 87, 93, 95, 97, 101, 103, 105, 111, 113, 115, 117, 121, 127, 129, 141, 157, 161, 171, 193, 201, 205, 209, 231, 247, 291, 323, 343, 351, 353, 361, 367, 401]

cp's OEIS Frontend

A082720 Digit lengths for which there exist plateau or depression primes of the general form a(10^m-1)/9 +- b(10^(m-1)+1).

Table of values

List of values

n	a(n)
0	3
1	5
2	7
3	9
4	11
5	13
6	15
7	17
8	19
9	21
10	23
11	29
12	31
13	33
14	37
15	41
16	49
17	53
18	55
19	59
20	61
21	65
22	67
23	69
24	73
25	75
26	83
27	85
28	87
29	93
30	95
31	97
32	101
33	103
34	105
35	111
36	113
37	115
38	117
39	121
40	127
41	129
42	141
43	157
44	161
45	171
46	193
47	201
48	205
49	209
50	231
51	247
52	291
53	323
54	343
55	351
56	353
57	361
58	367
59	401

n	a(n)
0	3
1	5
2	7
3	9
4	11
5	13
6	15
7	17
8	19
9	21
10	23
11	29
12	31
13	33
14	37
15	41
16	49
17	53
18	55
19	59
20	61
21	65
22	67
23	69
24	73
25	75
26	83
27	85
28	87
29	93
30	95
31	97
32	101
33	103
34	105
35	111
36	113
37	115
38	117
39	121
40	127
41	129
42	141
43	157
44	161
45	171
46	193
47	201
48	205
49	209
50	231
51	247
52	291
53	323
54	343
55	351
56	353
57	361
58	367
59	401

cp's OEIS Frontend

A082720 Digit lengths for which there exist plateau or depression primes of the general form a*(10^m-1)/9 +- b*(10^(m-1)+1).

Table of values

List of values

A082720 Digit lengths for which there exist plateau or depression primes of the general form a(10^m-1)/9 +- b(10^(m-1)+1).

n	a(n)
0	3
1	5
2	7
3	9
4	11
5	13
6	15
7	17
8	19
9	21
10	23
11	29
12	31
13	33
14	37
15	41
16	49
17	53
18	55
19	59
20	61
21	65
22	67
23	69
24	73
25	75
26	83
27	85
28	87
29	93
30	95
31	97
32	101
33	103
34	105
35	111
36	113
37	115
38	117
39	121
40	127
41	129
42	141
43	157
44	161
45	171
46	193
47	201
48	205
49	209
50	231
51	247
52	291
53	323
54	343
55	351
56	353
57	361
58	367
59	401