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.

A088073 Beginning with 11 (concatenation of 1 twice), smallest number which is a concatenation of itself as many (say k) times required, chosen from odd numbers not == 5 (mod 10), in natural order, so that every partial concatenation is prime.

Table of values

n a(n)
0 11
1 3
2 777
3 999
4 11
5 131313131313131313131313131313131313131313

List of values

[11, 3, 777, 999, 11, 131313131313131313131313131313131313131313]

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

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