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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.

A103357 Numbers n such that n and pi(n) (A000720) are palindromic.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 11
11 22
12 33
13 262
14 323
15 393
16 525
17 535
18 555
19 666
20 818
21 878
22 949
23 2002
24 3773
25 5775
26 6116
27 13031
28 19591
29 39093
30 41414
31 47374
32 59295
33 63236
34 81918
35 94549
36 95759
37 252252
38 394493
39 594495
40 662266
41 674476
42 686686
43 698896
44 764467

List of values

[1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 262, 323, 393, 525, 535, 555, 666, 818, 878, 949, 2002, 3773, 5775, 6116, 13031, 19591, 39093, 41414, 47374, 59295, 63236, 81918, 94549, 95759, 252252, 394493, 594495, 662266, 674476, 686686, 698896, 764467]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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