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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.

A134649 Minimal n-primeval numbers: a(n) = smallest number M such that all primes with <= n digits are embedded in a permuted subsequence of M's digits.

Table of values

n a(n)
1 2357
2 1123456789
3 1012233445566778899
4 10011222333444555666777888999
5 1000111222233334444555666777788889999
6 100001111222233333444445555566666777778888899999
7 100000111112222233333344444555556666677777788888999999

List of values

[2357, 1123456789, 1012233445566778899, 10011222333444555666777888999, 1000111222233334444555666777788889999, 100001111222233333444445555566666777778888899999, 100000111112222233333344444555556666677777788888999999]

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

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