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) |
|---|---|
| 0 | 1000000000 |
| 1 | 100000000 |
| 2 | 10000000 |
| 3 | 1000000 |
| 4 | 100000 |
| 5 | 10000 |
| 6 | 1000 |
| 7 | 100 |
| 8 | 10 |
| 9 | 1 |
| 10 | 1100000000 |
| 11 | 200000000 |
| 12 | 110000000 |
| 13 | 101000000 |
| 14 | 100100000 |
| 15 | 100010000 |
| 16 | 100001000 |
| 17 | 100000100 |
| 18 | 100000010 |
| 19 | 100000001 |
| 20 | 1010000000 |
| 21 | 110000000 |
| 22 | 20000000 |
| 23 | 11000000 |
| 24 | 10100000 |
| 25 | 10010000 |
| 26 | 10001000 |