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.

A236671 Start with 8; thereafter, primes obtained by concatenating to the end of previous term the next smallest number that will produce a prime.

Table of values

n a(n)
1 8
2 83
3 839
4 83911
5 839117
6 83911721
7 8391172123
8 83911721233
9 839117212337
10 83911721233729
11 839117212337293
12 83911721233729399
13 839117212337293999
14 83911721233729399993
15 839117212337293999931
16 83911721233729399993139

List of values

[8, 83, 839, 83911, 839117, 83911721, 8391172123, 83911721233, 839117212337, 83911721233729, 839117212337293, 83911721233729399, 839117212337293999, 83911721233729399993, 839117212337293999931, 83911721233729399993139]

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

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