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 | 8 |
| 3 | 128 |
| 4 | 15360 |
| 5 | 3440640 |
| 6 | 247726080 |
| 7 | 653996851200 |
| 8 | 476109707673600 |
| 9 | 457065319366656000 |
| 10 | 43034457761906688000 |
| 11 | 850360885375276154880000 |
| 12 | 1571466916173510334218240000 |
| 13 | 693959790182222163590774784000 |
| 14 | 9021477272368888126680072192000000 |
| 15 | 27280947271643517695080538308608000000 |