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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.

A236527 Primes obtained by concatenating to the end of previous term the next smallest number that will produce a prime, starting with 3.

Table of values

n a(n)
1 3
2 31
3 311
4 3119
5 31193
6 3119317
7 31193171
8 311931713
9 3119317139
10 311931713939
11 31193171393933
12 3119317139393353
13 31193171393933531
14 3119317139393353121
15 311931713939335312127
16 311931713939335312127113
17 31193171393933531212711399
18 31193171393933531212711399123

List of values

[3, 31, 311, 3119, 31193, 3119317, 31193171, 311931713, 3119317139, 311931713939, 31193171393933, 3119317139393353, 31193171393933531, 3119317139393353121, 311931713939335312127, 311931713939335312127113, 31193171393933531212711399, 31193171393933531212711399123]

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

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