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.

A075597 a(1) = 3 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1).

Table of values

n a(n)
1 3
2 131
3 11311
4 3113111
5 231131111
6 22311311119
7 3223113111199
8 132231131111993
9 11322311311119931
10 7113223113111199313
11 171132231131111993137
12 31711322311311119931373
13 3317113223113111199313733

List of values

[3, 131, 11311, 3113111, 231131111, 22311311119, 3223113111199, 132231131111993, 11322311311119931, 7113223113111199313, 171132231131111993137, 31711322311311119931373, 3317113223113111199313733]

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

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