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.

A065850 Let u be any string of n digits from {0,...,8}; let f(u) = number of distinct primes, not beginning with 0, formed by permuting the digits of u to a base-9 number; then a(n) = max_u f(u).

Table of values

n a(n)
1 1
2 2
3 5
4 11
5 39
6 161
7 865
8 4604
9 22636
10 161107
11 840691
12 4813328
13 29664164

List of values

[1, 2, 5, 11, 39, 161, 865, 4604, 22636, 161107, 840691, 4813328, 29664164]

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

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