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.

A023245 Primes that remain prime through 2 iterations of the function f(x) = 2x + 9.

Table of values

n a(n)
1 5
2 11
3 19
4 31
5 59
6 61
7 71
8 101
9 109
10 151
11 179
12 239
13 241
14 269
15 281
16 389
17 409
18 439
19 449
20 521
21 571
22 641
23 659
24 719
25 829
26 911
27 971
28 1051
29 1061
30 1181
31 1201
32 1229
33 1319
34 1361
35 1439
36 1579
37 1669
38 1699
39 1741
40 1831
41 1949
42 2269
43 2341
44 2371
45 2521
46 2549
47 2579
48 2609
49 2671

List of values

[5, 11, 19, 31, 59, 61, 71, 101, 109, 151, 179, 239, 241, 269, 281, 389, 409, 439, 449, 521, 571, 641, 659, 719, 829, 911, 971, 1051, 1061, 1181, 1201, 1229, 1319, 1361, 1439, 1579, 1669, 1699, 1741, 1831, 1949, 2269, 2341, 2371, 2521, 2549, 2579, 2609, 2671]

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

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