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.
| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 30 |
| 3 | 102 |
| 4 | 1002 |
| 5 | 2001 |
| 6 | 10002 |
| 7 | 10011 |
| 8 | 11001 |
| 9 | 20001 |
| 10 | 100101 |
| 11 | 101001 |
| 12 | 110001 |
| 13 | 200001 |
| 14 | 1000002 |
| 15 | 10001001 |
| 16 | 10010001 |
| 17 | 11000001 |
| 18 | 20000001 |
| 19 | 100000101 |
| 20 | 1000000011 |
| 21 | 1000001001 |
| 22 | 1000010001 |
| 23 | 1000100001 |
| 24 | 1001000001 |
| 25 | 1010000001 |
| 26 | 10000000002 |
| 27 | 10000000011 |
| 28 | 10000010001 |
| 29 | 11000000001 |
| 30 | 100000000101 |
| 31 | 100000001001 |