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.

A178321 Numbers k such that 58/111*(10^(3*k)-1)-1 is prime.

Table of values

n a(n)
1 1
2 2
3 15
4 74
5 278
6 541
7 668
8 1320
9 1780
10 1874
11 4824
12 13310
13 20420
14 24887

List of values

[1, 2, 15, 74, 278, 541, 668, 1320, 1780, 1874, 4824, 13310, 20420, 24887]