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 | 1 |
| 2 | 11 |
| 3 | 20 |
| 4 | 33 |
| 5 | 35 |
| 6 | 36 |
| 7 | 75 |
| 8 | 79 |
| 9 | 390 |
| 10 | 1991 |
| 11 | 9199 |
| 12 | 91899 |
| 13 | 699949 |
| 14 | 5299999 |
| 15 | 39999999 |
| 16 | 428999999 |
| 17 | 3699949999 |