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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.

A077714 a(1) = 1; thereafter a(n) = the smallest prime of the form d0...0a(n-1), where d is a single digit, or 0 if no such prime exists.

Table of values

n a(n)
1 1
2 11
3 211
4 4211
5 34211
6 234211
7 4234211
8 304234211
9 9304234211
10 209304234211
11 7209304234211
12 37209304234211
13 3037209304234211
14 23037209304234211
15 323037209304234211
16 70000323037209304234211
17 300070000323037209304234211
18 600300070000323037209304234211

List of values

[1, 11, 211, 4211, 34211, 234211, 4234211, 304234211, 9304234211, 209304234211, 7209304234211, 37209304234211, 3037209304234211, 23037209304234211, 323037209304234211, 70000323037209304234211, 300070000323037209304234211, 600300070000323037209304234211]

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

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