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 | 1 |
| 1 | 8 |
| 2 | 100 |
| 3 | 1144 |
| 4 | 12906 |
| 5 | 141848 |
| 6 | 1532276 |
| 7 | 16290920 |
| 8 | 170938483 |
| 9 | 1773107760 |
| 10 | 18208004664 |
| 11 | 185316171472 |
| 12 | 1871103319988 |
| 13 | 18756665504080 |
| 14 | 186798940872312 |
| 15 | 1849265718114736 |
| 16 | 18207140415436701 |
| 17 | 178355043327697976 |
| 18 | 1738966407826985884 |
| 19 | 16881111732250394440 |