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.

A110782 Copies of 1,3,7 and 9 cyclically such that every partial concatenation is a prime.

Table of values

n a(n)
1 11
2 3
3 777
4 999
5 11
6 33333333
7 777777777777777777777
8 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
9 1111111111111111111111111

List of values

[11, 3, 777, 999, 11, 33333333, 777777777777777777777, 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999, 1111111111111111111111111]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.