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 | 0 |
| 1 | 10 |
| 2 | 90 |
| 3 | 810 |
| 4 | 8010 |
| 5 | 79290 |
| 6 | 792090 |
| 7 | 7912890 |
| 8 | 79120890 |
| 9 | 791129610 |
| 10 | 7911216810 |
| 11 | 79111376010 |
| 12 | 791112968010 |
| 13 | 7911121767210 |
| 14 | 79111209759210 |
| 15 | 791112018471210 |
| 16 | 7911120105591210 |
| 17 | 79111200264782490 |
| 18 | 791112001856695290 |
| 19 | 7911120010655736090 |
| 20 | 79111200098646144090 |