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 | 85 |
| 3 | 833 |
| 4 | 8319 |
| 5 | 83190 |
| 6 | 831910 |
| 7 | 8319081 |
| 8 | 83190727 |
| 9 | 831907372 |
| 10 | 8319073719 |
| 11 | 83190737244 |
| 12 | 831907372522 |
| 13 | 8319073725828 |
| 14 | 83190737258105 |
| 15 | 831907372580692 |
| 16 | 8319073725807178 |
| 17 | 83190737258070643 |
| 18 | 831907372580707771 |