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.

A123628 Smallest prime of the form (q^p+1)/(q+1), where p = prime(n) and q is also prime (q = A123627(n)); or 1 if such a prime does not exist.

Table of values

n a(n)
1 1
2 3
3 11
4 43
5 683
6 2731
7 43691
8 174763
9 2796203
10 402488219476647465854701
11 715827883
12 10300379826060720504760427912621791994517454717
13 254760179343040585394724919772965278539769280548173566545431025735121201

List of values

[1, 3, 11, 43, 683, 2731, 43691, 174763, 2796203, 402488219476647465854701, 715827883, 10300379826060720504760427912621791994517454717, 254760179343040585394724919772965278539769280548173566545431025735121201]

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

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