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 | 3 |
| 2 | 10 |
| 3 | 42 |
| 4 | 60 |
| 5 | 63 |
| 6 | 840 |
| 7 | 1260 |
| 8 | 12642 |
| 9 | 18480 |
| 10 | 18900 |
| 11 | 18963 |
| 12 | 154350 |
| 13 | 228480 |
| 14 | 252840 |
| 15 | 379260 |
| 16 | 3458700 |
| 17 | 5562480 |
| 18 | 5688900 |
| 19 | 68772480 |
| 20 | 1041068700 |
| 21 | 15032156160 |
| 22 | 53621568000 |
| 23 | 4524679004160 |
| 24 | 9812746944000 |