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.

A243428 Semiprimes A001358(n) such that A001358(n) + 2^n is also a semiprime.

Table of values

n a(n)
1 4
2 6
3 10
4 14
5 22
6 25
7 35
8 39
9 95
10 123
11 129
12 177
13 289
14 309
15 327
16 355
17 415
18 445
19 471
20 497
21 543
22 689

List of values

[4, 6, 10, 14, 22, 25, 35, 39, 95, 123, 129, 177, 289, 309, 327, 355, 415, 445, 471, 497, 543, 689]