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) |
|---|---|
| 1 | 0 |
| 2 | 9 |
| 3 | 44 |
| 4 | 446 |
| 5 | 4857 |
| 6 | 49325 |
| 7 | 521514 |
| 8 | 5457161 |
| 9 | 57311190 |
| 10 | 601654211 |
| 11 | 6316448607 |
| 12 | 66317193844 |
| 13 | 696258824443 |
| 14 | 7310037380326 |
| 15 | 76748138985060 |
| 16 | 805779765484701 |
| 17 | 8459893652740792 |
| 18 | 88820547809627099 |
| 19 | 932528264893178568 |