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.

A165801 f(n), f(f(n)), ... are all prime, where f(n) = (n-1)/2. Stop when f(...f(n)...) is less than 4.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 7
6 11
7 15
8 23
9 47
10 95

List of values

[1, 2, 3, 5, 7, 11, 15, 23, 47, 95]