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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.

A077712 a(1) = 1, a(n) = the smallest squarefree number > a(n-1) which contains all the digits of a(n-1).

Table of values

n a(n)
1 1
2 10
3 101
4 110
5 1001
6 1010
7 10001
8 10010
9 100001
10 100010
11 1000001
12 1000010
13 10000001
14 10000010
15 100000001
16 100000010
17 1000000001
18 1000000010
19 10000000001
20 10000000010
21 100000000010
22 1000000000001
23 10000000000001

List of values

[1, 10, 101, 110, 1001, 1010, 10001, 10010, 100001, 100010, 1000001, 1000010, 10000001, 10000010, 100000001, 100000010, 1000000001, 1000000010, 10000000001, 10000000010, 100000000010, 1000000000001, 10000000000001]

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

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