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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.

A180022 Primes that can be obtained from other primes by interchanging the first and last digits. The source prime and the resulting prime are written consecutively.

Table of values

n a(n)
1 11
2 11
3 13
4 31
5 17
6 71
7 31
8 13
9 37
10 73
11 71
12 17
13 73
14 37
15 79
16 97
17 97
18 79
19 101
20 101
21 107
22 701
23 113
24 311
25 131
26 131
27 149
28 941
29 151
30 151
31 157
32 751
33 167
34 761
35 179
36 971
37 181
38 181
39 191
40 191
41 199
42 991
43 311
44 113
45 313
46 313
47 337
48 733
49 347
50 743
51 353
52 353
53 359
54 953
55 373
56 373

List of values

[11, 11, 13, 31, 17, 71, 31, 13, 37, 73, 71, 17, 73, 37, 79, 97, 97, 79, 101, 101, 107, 701, 113, 311, 131, 131, 149, 941, 151, 151, 157, 751, 167, 761, 179, 971, 181, 181, 191, 191, 199, 991, 311, 113, 313, 313, 337, 733, 347, 743, 353, 353, 359, 953, 373, 373]

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

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