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 | 1 |
| 2 | 36 |
| 3 | 12 |
| 4 | 360 |
| 5 | 1728 |
| 6 | 2 |
| 7 | 864 |
| 8 | 64800 |
| 9 | 62208 |
| 10 | 40960 |
| 11 | 57153600 |
| 12 | 8128512 |
| 13 | 31104 |
| 14 | 10497600 |
| 15 | 184320 |
| 16 | 31352832 |
| 17 | 414720 |
| 18 | 17418240 |
| 19 | 1360488960 |
| 20 | 54177693696 |
| 21 | 9631589990400 |
| 22 | 156764160000 |
| 23 | 79009136640000 |
| 24 | 1161434308608000 |
| 25 | 880969431121920 |
| 26 | 97497558401679360 |
| 27 | 82944 |