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 | 22 |
| 2 | 169 |
| 3 | 702 |
| 4 | 2271 |
| 5 | 6786 |
| 6 | 20065 |
| 7 | 60214 |
| 8 | 184233 |
| 9 | 575410 |
| 10 | 1833641 |
| 11 | 5947567 |
| 12 | 19579806 |
| 13 | 65205152 |
| 14 | 219009930 |
| 15 | 740080588 |
| 16 | 2511332286 |
| 17 | 8545644419 |
| 18 | 29133026750 |
| 19 | 99436525669 |
| 20 | 339656225391 |
| 21 | 1160767044395 |
| 22 | 3968114261421 |
| 23 | 13567722769117 |