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 | 61 |
| 2 | 6 |
| 3 | 60 |
| 4 | 630 |
| 5 | 6006 |
| 6 | 60060 |
| 7 | 690690 |
| 8 | 60090030 |
| 9 | 601380780 |
| 10 | 6469693230 |
| 11 | 600319429710 |
| 12 | 60007743265470 |
| 13 | 600277546959090 |
| 14 | 60039293728424010 |
| 15 | 614889782588491410 |
| 16 | 60865792091025932010 |
| 17 | 6000526229622444289770 |
| 18 | 600025752738409899231330 |