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.

A366648 Numbers k such that 4^k + 1 is a semiprime.

Table of values

n a(n)
1 3
2 6
3 10
4 14
5 16
6 20
7 32
8 46
9 52
10 64
11 74
12 128
13 178
14 298
15 346
16 502
17 614
18 634
19 1912
20 60394
21 92116

List of values

[3, 6, 10, 14, 16, 20, 32, 46, 52, 64, 74, 128, 178, 298, 346, 502, 614, 634, 1912, 60394, 92116]