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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.

A125523 Democratic primes: primes such that the left half of the prime is prime and the right half is not.

Table of values

n a(n)
2 29
3 31
4 59
5 71
6 79
7 211
8 229
9 239
10 241
11 251
12 269
13 271
14 281
15 311
16 331
17 349
18 359
19 379
20 389
21 509
22 521
23 541
24 569
25 571
26 599
27 701
28 709
29 719
30 739
31 751
32 761
33 769
34 1109
35 1151
36 1163
37 1181
38 1187
39 1193
40 1301
41 1321
42 1327
43 1381
44 1399
45 1709
46 1721
47 1733
48 1777
49 1787
50 1901

List of values

[29, 31, 59, 71, 79, 211, 229, 239, 241, 251, 269, 271, 281, 311, 331, 349, 359, 379, 389, 509, 521, 541, 569, 571, 599, 701, 709, 719, 739, 751, 761, 769, 1109, 1151, 1163, 1181, 1187, 1193, 1301, 1321, 1327, 1381, 1399, 1709, 1721, 1733, 1777, 1787, 1901]

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

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