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 | 24 |
| 3 | 360 |
| 4 | 5016 |
| 5 | 28440 |
| 6 | 42066 |
| 7 | 50568 |
| 8 | 60456 |
| 9 | 187176 |
| 10 | 998670 |
| 11 | 1454706 |
| 12 | 12055512 |
| 13 | 14365608 |
| 14 | 25726728 |
| 15 | 27896424 |
| 16 | 51670374 |
| 17 | 91702962 |
| 18 | 141084774 |
| 19 | 236280786 |
| 20 | 249854952 |
| 21 | 386668344 |
| 22 | 439362504 |
| 23 | 792554574 |
| 24 | 1115866152 |
| 25 | 1931976696 |
| 26 | 2467823442 |
| 27 | 2496238590 |
| 28 | 2655297558 |
| 29 | 2715505440 |