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.

A023273 Primes that remain prime through 3 iterations of function f(x) = 2x + 3.

Table of values

n a(n)
1 2
2 5
3 47
4 67
5 97
6 137
7 197
8 277
9 307
10 607
11 617
12 1307
13 1427
14 2857
15 5717
16 6047
17 6217
18 6257
19 6997
20 9377
21 9787
22 9967
23 11197
24 12097
25 13297
26 13997
27 14347
28 16057
29 18757
30 18947
31 20887
32 21517
33 21587
34 21757
35 24197
36 26227
37 28097
38 28447
39 32117
40 33767
41 34367
42 35117

List of values

[2, 5, 47, 67, 97, 137, 197, 277, 307, 607, 617, 1307, 1427, 2857, 5717, 6047, 6217, 6257, 6997, 9377, 9787, 9967, 11197, 12097, 13297, 13997, 14347, 16057, 18757, 18947, 20887, 21517, 21587, 21757, 24197, 26227, 28097, 28447, 32117, 33767, 34367, 35117]