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.

A103091 Numbers n such that 8*10^n + 7*R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n.

Table of values

n a(n)
1 1
2 3
3 6
4 31
5 36
6 61
7 117
8 229
9 339
10 3165
11 3958
12 5277
13 5343
14 6079
15 6535
16 8485
17 15084
18 34537

List of values

[1, 3, 6, 31, 36, 61, 117, 229, 339, 3165, 3958, 5277, 5343, 6079, 6535, 8485, 15084, 34537]