A077799 - cp's OEIS frontend

A077799 Numbers m such that a smoothly undulating palindromic prime of the form (rs*10^m-sr)/99 exists, where r and s are two distinct digits and rs and sr denote concatenations of those digits.

n	a(n)
1	3
2	5
3	7
4	9
5	11
6	15
7	17
8	21
9	23
10	25
11	27
12	31
13	33
14	37
15	39
16	43
17	45
18	51
19	55
20	57
21	63
22	65
23	71
24	77
25	81
26	83
27	89
28	95
29	99
30	109
31	133
32	139
33	143
34	145
35	149
36	161
37	163
38	195
39	209
40	219
41	225
42	229
43	237
44	243
45	245
46	277
47	315
48	357
49	479
50	513
51	515
52	537
53	551
54	561
55	567
56	583
57	627
58	849
59	857

[3, 5, 7, 9, 11, 15, 17, 21, 23, 25, 27, 31, 33, 37, 39, 43, 45, 51, 55, 57, 63, 65, 71, 77, 81, 83, 89, 95, 99, 109, 133, 139, 143, 145, 149, 161, 163, 195, 209, 219, 225, 229, 237, 243, 245, 277, 315, 357, 479, 513, 515, 537, 551, 561, 567, 583, 627, 849, 857]

cp's OEIS Frontend

A077799 Numbers m such that a smoothly undulating palindromic prime of the form (rs*10^m-sr)/99 exists, where r and s are two distinct digits and rs and sr denote concatenations of those digits.

Table of values

List of values

n	a(n)
1	3
2	5
3	7
4	9
5	11
6	15
7	17
8	21
9	23
10	25
11	27
12	31
13	33
14	37
15	39
16	43
17	45
18	51
19	55
20	57
21	63
22	65
23	71
24	77
25	81
26	83
27	89
28	95
29	99
30	109
31	133
32	139
33	143
34	145
35	149
36	161
37	163
38	195
39	209
40	219
41	225
42	229
43	237
44	243
45	245
46	277
47	315
48	357
49	479
50	513
51	515
52	537
53	551
54	561
55	567
56	583
57	627
58	849
59	857

n	a(n)
1	3
2	5
3	7
4	9
5	11
6	15
7	17
8	21
9	23
10	25
11	27
12	31
13	33
14	37
15	39
16	43
17	45
18	51
19	55
20	57
21	63
22	65
23	71
24	77
25	81
26	83
27	89
28	95
29	99
30	109
31	133
32	139
33	143
34	145
35	149
36	161
37	163
38	195
39	209
40	219
41	225
42	229
43	237
44	243
45	245
46	277
47	315
48	357
49	479
50	513
51	515
52	537
53	551
54	561
55	567
56	583
57	627
58	849
59	857

n	a(n)
1	3
2	5
3	7
4	9
5	11
6	15
7	17
8	21
9	23
10	25
11	27
12	31
13	33
14	37
15	39
16	43
17	45
18	51
19	55
20	57
21	63
22	65
23	71
24	77
25	81
26	83
27	89
28	95
29	99
30	109
31	133
32	139
33	143
34	145
35	149
36	161
37	163
38	195
39	209
40	219
41	225
42	229
43	237
44	243
45	245
46	277
47	315
48	357
49	479
50	513
51	515
52	537
53	551
54	561
55	567
56	583
57	627
58	849
59	857