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.

A077713 a(1) = 3; thereafter a(n) = the smallest prime of the form d0...0a(n-1), where d is a single digit, or 0 if no such prime exists.

Table of values

n a(n)
1 3
2 13
3 113
4 2113
5 12113
6 612113
7 50612113
8 1050612113
9 6001050612113
10 26001050612113
11 1026001050612113
12 6000001026001050612113
13 500006000001026001050612113
14 600500006000001026001050612113
15 1600500006000001026001050612113
16 6001600500006000001026001050612113

List of values

[3, 13, 113, 2113, 12113, 612113, 50612113, 1050612113, 6001050612113, 26001050612113, 1026001050612113, 6000001026001050612113, 500006000001026001050612113, 600500006000001026001050612113, 1600500006000001026001050612113, 6001600500006000001026001050612113]

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

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