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.

A077362 Largest n-digit prime whose external digits as well as internal digits form a prime, or 0 if no such number exists.

Table of values

n a(n)
0 0
1 0
2 977
3 9677
4 99377
5 998717
6 9998777
7 99999617
8 999999017
9 9999996437
10 99999997397
11 999999997277
12 9999999986477
13 99999999993317
14 999999999997337
15 9999999999990797
16 99999999999998837
17 999999999999995717
18 9999999999999997397
19 99999999999999994877

List of values

[0, 0, 977, 9677, 99377, 998717, 9998777, 99999617, 999999017, 9999996437, 99999997397, 999999997277, 9999999986477, 99999999993317, 999999999997337, 9999999999990797, 99999999999998837, 999999999999995717, 9999999999999997397, 99999999999999994877]

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

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