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.

A235395 Primes whose decimal representation is a valid number in base 9 and interpreted as such is again a prime.

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 41
6 47
7 67
8 131
9 151
10 241
11 331
12 337
13 461
14 557
15 601
16 641
17 661
18 751
19 757
20 827
21 887
22 1031
23 1181
24 1217
25 1231
26 1321
27 1327
28 1367
29 1471
30 1637
31 1877
32 2027
33 2081
34 2111
35 2131
36 2207
37 2281
38 2287
39 2351
40 2357
41 2647
42 2731
43 2861
44 3037
45 3121
46 3181
47 3187
48 3307
49 3347

List of values

[2, 3, 5, 7, 41, 47, 67, 131, 151, 241, 331, 337, 461, 557, 601, 641, 661, 751, 757, 827, 887, 1031, 1181, 1217, 1231, 1321, 1327, 1367, 1471, 1637, 1877, 2027, 2081, 2111, 2131, 2207, 2281, 2287, 2351, 2357, 2647, 2731, 2861, 3037, 3121, 3181, 3187, 3307, 3347]

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

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