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.

A075598 a(1) = 5 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 5
2 151
3 11519
4 2115193
5 121151939
6 21211519397
7 4212115193971
8 342121151939719
9 43421211519397199
10 2434212115193971993
11 224342121151939719937
12 122434212115193971993787
13 51224342121151939719937871
14 2512243421211519397199378719
15 325122434212115193971993787197
16 93251224342121151939719937871973

List of values

[5, 151, 11519, 2115193, 121151939, 21211519397, 4212115193971, 342121151939719, 43421211519397199, 2434212115193971993, 224342121151939719937, 122434212115193971993787, 51224342121151939719937871, 2512243421211519397199378719, 325122434212115193971993787197, 93251224342121151939719937871973]

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

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