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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A100026 Consider all (2n+1)-digit palindromic primes of the form 10...0M0...01 (so that M is a palindrome with <= 2n-1 digits); a(n) = smallest such M.

Table of values

n a(n)
1 0
2 3
3 3
4 3
5 5
6 8
7 323
8 5
9 8
10 212
11 3
12 161
13 8
14 3
15 242
16 3
17 8
18 10901
19 737
20 161
21 242
22 333
23 282
24 6
25 252
26 474
27 5
28 12921
29 8
30 131
31 18381
32 6
33 444
34 6
35 797
36 606
37 717
38 15351
39 464
40 333
41 626
42 545
43 13031
44 161
45 747
46 191
47 323
48 636
49 32523
50 303
51 282
52 888
53 686
54 18981
55 111
56 15951
57 12021

List of values

[0, 3, 3, 3, 5, 8, 323, 5, 8, 212, 3, 161, 8, 3, 242, 3, 8, 10901, 737, 161, 242, 333, 282, 6, 252, 474, 5, 12921, 8, 131, 18381, 6, 444, 6, 797, 606, 717, 15351, 464, 333, 626, 545, 13031, 161, 747, 191, 323, 636, 32523, 303, 282, 888, 686, 18981, 111, 15951, 12021]