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.

A339309 Numbers k such that A228553(k) is twice a prime.

Table of values

n a(n)
1 2
2 5
3 7
4 8
5 9
6 10
7 14
8 16
9 34
10 53
11 55
12 83
13 91
14 140
15 172
16 180
17 182
18 187
19 189
20 242
21 246
22 254
23 265
24 288
25 361
26 398
27 404
28 421
29 435
30 490
31 508
32 559
33 574
34 623
35 706
36 727
37 736
38 747
39 770
40 773
41 777
42 984
43 985
44 1065
45 1093
46 1106
47 1125
48 1187
49 1245
50 1256
51 1287
52 1341
53 1346
54 1361
55 1372
56 1381
57 1449
58 1467
59 1573
60 1596

List of values

[2, 5, 7, 8, 9, 10, 14, 16, 34, 53, 55, 83, 91, 140, 172, 180, 182, 187, 189, 242, 246, 254, 265, 288, 361, 398, 404, 421, 435, 490, 508, 559, 574, 623, 706, 727, 736, 747, 770, 773, 777, 984, 985, 1065, 1093, 1106, 1125, 1187, 1245, 1256, 1287, 1341, 1346, 1361, 1372, 1381, 1449, 1467, 1573, 1596]