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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.

A180559 Primes that become a different prime under the mapping 7 <=> 9.

Table of values

n a(n)
1 17
2 19
3 79
4 97
5 107
6 109
7 137
8 139
9 173
10 179
11 193
12 197
13 227
14 229
15 347
16 349
17 379
18 397
19 577
20 599
21 617
22 619
23 709
24 727
25 739
26 769
27 827
28 829
29 857
30 859
31 907
32 929
33 937
34 967
35 1279
36 1297
37 1427
38 1429
39 1487
40 1489
41 1579
42 1597
43 1607
44 1609
45 1667
46 1669
47 1709
48 1733
49 1747

List of values

[17, 19, 79, 97, 107, 109, 137, 139, 173, 179, 193, 197, 227, 229, 347, 349, 379, 397, 577, 599, 617, 619, 709, 727, 739, 769, 827, 829, 857, 859, 907, 929, 937, 967, 1279, 1297, 1427, 1429, 1487, 1489, 1579, 1597, 1607, 1609, 1667, 1669, 1709, 1733, 1747]

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

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