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 | 9 |
| 2 | 93 |
| 3 | 1005 |
| 4 | 11001 |
| 5 | 120849 |
| 6 | 1328853 |
| 7 | 14615925 |
| 8 | 160770801 |
| 9 | 1768465689 |
| 10 | 19453083213 |
| 11 | 213983797245 |
| 12 | 2353821415401 |
| 13 | 25892034506529 |
| 14 | 284812376383173 |
| 15 | 3132936130648965 |
| 16 | 34462297408440801 |
| 17 | 379085271406755369 |