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.

A036931 Smallest n-digit prime containing only digits 1 and 4, or 0 if no such prime exists.

Table of values

n a(n)
1 0
2 11
3 0
4 4111
5 11411
6 0
7 1114111
8 11111141
9 0
10 1111111411
11 11111141411
12 0
13 1111111111441
14 11111111111411
15 0
16 1111111111114441
17 11111111111414411
18 0
19 1111111111111111111
20 11111111111111414441
21 0
22 1111111111111111144141

List of values

[0, 11, 0, 4111, 11411, 0, 1114111, 11111141, 0, 1111111411, 11111141411, 0, 1111111111441, 11111111111411, 0, 1111111111114441, 11111111111414411, 0, 1111111111111111111, 11111111111111414441, 0, 1111111111111111144141]

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

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