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.

A023263 Primes that remain prime through 2 iterations of function f(x) = 8x + 7.

Table of values

n a(n)
1 2
2 5
3 107
4 137
5 179
6 197
7 227
8 359
9 419
10 617
11 659
12 839
13 977
14 1097
15 1217
16 1409
17 1487
18 1559
19 1637
20 2087
21 2339
22 2447
23 2549
24 2609
25 2687
26 2909
27 2957
28 3167
29 3299
30 3467
31 3719
32 4139
33 4409
34 4787
35 4919
36 4937
37 5147
38 5189
39 5279
40 5639
41 6047
42 6269
43 7229
44 7547
45 7949

List of values

[2, 5, 107, 137, 179, 197, 227, 359, 419, 617, 659, 839, 977, 1097, 1217, 1409, 1487, 1559, 1637, 2087, 2339, 2447, 2549, 2609, 2687, 2909, 2957, 3167, 3299, 3467, 3719, 4139, 4409, 4787, 4919, 4937, 5147, 5189, 5279, 5639, 6047, 6269, 7229, 7547, 7949]

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

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