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 | 9 |
| 2 | 18 |
| 3 | 27 |
| 4 | 267 |
| 5 | 2667 |
| 6 | 26667 |
| 7 | 266667 |
| 8 | 2666667 |
| 9 | 26666667 |
| 10 | 266666667 |
| 11 | 2666666667 |
| 12 | 9063180828 |
| 13 | 9237472767 |
| 14 | 9411764706 |
| 15 | 9586056645 |
| 16 | 9760348584 |
| 17 | 9934640523 |
| 18 | 10108932462 |
| 19 | 10283224401 |
| 20 | 10457516340 |
| 21 | 10631808279 |
| 22 | 10806100218 |