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.

A209620 Emirps that become their own reversals when rotated through 180 degrees (including on calculator display).

Table of values

n a(n)
1 1021
2 1151
3 1181
4 1201
5 1511
6 1811
7 10151
8 11551
9 15101
10 15511
11 100511
12 101281
13 102181
14 102551
15 105211
16 105251
17 108881
18 110051
19 110221
20 110281
21 110881
22 111211
23 111821
24 112111
25 112181
26 112501
27 115001
28 115021
29 118081
30 120121
31 120511
32 121021
33 121151
34 122011

List of values

[1021, 1151, 1181, 1201, 1511, 1811, 10151, 11551, 15101, 15511, 100511, 101281, 102181, 102551, 105211, 105251, 108881, 110051, 110221, 110281, 110881, 111211, 111821, 112111, 112181, 112501, 115001, 115021, 118081, 120121, 120511, 121021, 121151, 122011]

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

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