cp's OEIS Frontend

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.

A072392 Numbers n such that reverse(n) = phi(n) (mod n).

Table of values

n a(n)
1 21
2 27
3 37
4 63
5 270
6 291
7 397
8 1545
9 1853
10 2991
11 6102
12 15503
13 27036
14 48776
15 198683
16 200882
17 274536
18 1061361
19 2348128
20 2723436
21 2746836
22 3542805
23 3564217
24 3868867
25 3962197
26 4438616
27 19844683
28 46676013
29 69460293
30 198444683
31 202195682
32 297828396
33 309520655

List of values

[21, 27, 37, 63, 270, 291, 397, 1545, 1853, 2991, 6102, 15503, 27036, 48776, 198683, 200882, 274536, 1061361, 2348128, 2723436, 2746836, 3542805, 3564217, 3868867, 3962197, 4438616, 19844683, 46676013, 69460293, 198444683, 202195682, 297828396, 309520655]

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

Content is available under The OEIS End-User License Agreement.