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 | 2 |
| 1 | 9 |
| 2 | 79 |
| 3 | 702 |
| 4 | 6239 |
| 5 | 55449 |
| 6 | 492802 |
| 7 | 4379769 |
| 8 | 38925119 |
| 9 | 345946302 |
| 10 | 3074591599 |
| 11 | 27325378089 |
| 12 | 242853811202 |
| 13 | 2158358922729 |
| 14 | 19182376493359 |
| 15 | 170483029517502 |
| 16 | 1515164889164159 |
| 17 | 13466000972959929 |
| 18 | 119678843867475202 |