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.

A056696 Numbers k such that 90*R_k + 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k.

Table of values

n a(n)
1 2
2 4
3 6
4 32
5 44
6 104
7 196
8 198
9 280
10 300
11 316
12 1106
13 1656
14 3394
15 35924
16 37596
17 64304
18 80138
19 221630

List of values

[2, 4, 6, 32, 44, 104, 196, 198, 280, 300, 316, 1106, 1656, 3394, 35924, 37596, 64304, 80138, 221630]