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.

A381725 Numbers k such that 5^k - 4^k is a semiprime.

Table of values

n a(n)
1 2
2 5
3 7
4 11
5 13
6 19
7 31
8 41
9 79
10 83
11 113
12 157
13 173
14 233
15 281
16 317
17 359
18 373

List of values

[2, 5, 7, 11, 13, 19, 31, 41, 79, 83, 113, 157, 173, 233, 281, 317, 359, 373]