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.

A035239 Smallest number that contains the numbers from 1 to n as substrings.

Table of values

n a(n)
1 1
2 12
3 123
4 1234
5 12345
6 123456
7 1234567
8 12345678
9 123456789
10 1023456789
11 11023456789
12 101123456789
13 1011213456789
14 10112131456789
15 101121314156789
16 1011213141516789
17 10112131415161789
18 101121314151617189

List of values

[1, 12, 123, 1234, 12345, 123456, 1234567, 12345678, 123456789, 1023456789, 11023456789, 101123456789, 1011213456789, 10112131456789, 101121314156789, 1011213141516789, 10112131415161789, 101121314151617189]

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

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