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 | 6 |
| 2 | 66 |
| 3 | 666 |
| 4 | 6306 |
| 5 | 58026 |
| 6 | 527346 |
| 7 | 4766586 |
| 8 | 42981186 |
| 9 | 387158346 |
| 10 | 3485735826 |
| 11 | 31376865306 |
| 12 | 282412759266 |
| 13 | 2541798719466 |
| 14 | 22876524019506 |
| 15 | 205890058352826 |
| 16 | 1853015893884546 |
| 17 | 16677164519797386 |
| 18 | 150094566577522386 |