A069881 - cp's OEIS frontend

A069881 Numbers n such that n and 2n+1 are both palindromes.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	55
7	151
8	161
9	171
10	181
11	191
12	252
13	262
14	272
15	282
16	292
17	353
18	363
19	373
20	383
21	393
22	454
23	464
24	474
25	484
26	494
27	555
28	5555
29	15051
30	15151
31	15251
32	15351
33	15451
34	16061
35	16161
36	16261
37	16361
38	16461
39	17071
40	17171
41	17271
42	17371
43	17471
44	18081
45	18181

[1, 2, 3, 4, 5, 55, 151, 161, 171, 181, 191, 252, 262, 272, 282, 292, 353, 363, 373, 383, 393, 454, 464, 474, 484, 494, 555, 5555, 15051, 15151, 15251, 15351, 15451, 16061, 16161, 16261, 16361, 16461, 17071, 17171, 17271, 17371, 17471, 18081, 18181]

cp's OEIS Frontend

A069881 Numbers n such that n and 2n+1 are both palindromes.

Table of values

List of values