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 | 9199999999 |
| 2 | 9299999999 |
| 3 | 9959999999 |
| 4 | 9995999999 |
| 5 | 9999499999 |
| 6 | 9999929999 |
| 7 | 9999959999 |
| 8 | 9999999929 |
| 9 | 10999999999 |
| 10 | 16999999999 |
| 11 | 19399999999 |
| 12 | 19909999999 |
| 13 | 19991999999 |
| 14 | 19999399999 |
| 15 | 19999990999 |
| 16 | 19999997999 |
| 17 | 19999999199 |