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.

A038773 a(n) is the smallest prime of the form Q + c, where Q is the n-th primorial and c is a composite >= prime(n+1)^2.

Table of values

n a(n)
1 11
2 31
3 79
4 331
5 2531
6 30319
7 511039
8 9700357
9 223093769
10 6469694377
11 200560491721
12 7420738136831
13 304250263529059
14 13082761331672803
15 614889782588494961
16 32589158477190048817
17 1922760350154212643889
18 117288381359406970988027
19 7858321551080267055884131
20 557940830126698960967422909

List of values

[11, 31, 79, 331, 2531, 30319, 511039, 9700357, 223093769, 6469694377, 200560491721, 7420738136831, 304250263529059, 13082761331672803, 614889782588494961, 32589158477190048817, 1922760350154212643889, 117288381359406970988027, 7858321551080267055884131, 557940830126698960967422909]

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

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