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.

A002261 Numbers k such that 11*2^k + 1 is prime.

Table of values

n a(n)
1 1
2 3
3 5
4 7
5 19
6 21
7 43
8 81
9 125
10 127
11 209
12 211
13 3225
14 4543
15 10179
16 15329
17 18759
18 28277
19 93279
20 105741
21 268009
22 412447
23 525589
24 644677
25 886071
26 960901
27 1343347
28 2230369
29 2476839
30 2691961
31 2897409
32 3771821
33 8103463

List of values

[1, 3, 5, 7, 19, 21, 43, 81, 125, 127, 209, 211, 3225, 4543, 10179, 15329, 18759, 28277, 93279, 105741, 268009, 412447, 525589, 644677, 886071, 960901, 1343347, 2230369, 2476839, 2691961, 2897409, 3771821, 8103463]