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.

A077716 a(1) = 19; 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 19
2 419
3 5419
4 35419
5 435419
6 80435419
7 30000080435419
8 1030000080435419
9 91030000080435419
10 20091030000080435419
11 720091030000080435419
12 50720091030000080435419
13 650720091030000080435419
14 10650720091030000080435419
15 2000000010650720091030000080435419

List of values

[19, 419, 5419, 35419, 435419, 80435419, 30000080435419, 1030000080435419, 91030000080435419, 20091030000080435419, 720091030000080435419, 50720091030000080435419, 650720091030000080435419, 10650720091030000080435419, 2000000010650720091030000080435419]

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

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