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.

A023242 Primes that remain prime through 2 iterations of function f(x) = 2x + 3.

Table of values

n a(n)
1 2
2 5
3 7
4 13
5 43
6 47
7 67
8 97
9 113
10 137
11 167
12 173
13 197
14 277
15 307
16 397
17 463
18 467
19 557
20 607
21 617
22 887
23 1063
24 1153
25 1217
26 1237
27 1307
28 1373
29 1427
30 1453
31 1523
32 1553
33 1567
34 1663
35 1693
36 2027
37 2113
38 2143
39 2203
40 2617
41 2647
42 2707
43 2777
44 2857
45 2927
46 3343
47 3613
48 3767

List of values

[2, 5, 7, 13, 43, 47, 67, 97, 113, 137, 167, 173, 197, 277, 307, 397, 463, 467, 557, 607, 617, 887, 1063, 1153, 1217, 1237, 1307, 1373, 1427, 1453, 1523, 1553, 1567, 1663, 1693, 2027, 2113, 2143, 2203, 2617, 2647, 2707, 2777, 2857, 2927, 3343, 3613, 3767]