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.

A036939 Smallest n-digit prime containing only digits 2 and 9, or 0 if no such prime exists.

Table of values

n a(n)
1 2
2 29
3 229
4 2999
5 22229
6 0
7 2222929
8 22229299
9 222229229
10 2222229299
11 22222229299
12 0
13 2222222229229
14 22222222222229
15 222222222229229
16 2222222222229299
17 22222222222922299
18 0
19 2222222222222292929

List of values

[2, 29, 229, 2999, 22229, 0, 2222929, 22229299, 222229229, 2222229299, 22222229299, 0, 2222222229229, 22222222222229, 222222222229229, 2222222222229299, 22222222222922299, 0, 2222222222222292929]

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

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