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 | 24 |
| 2 | 1248 |
| 3 | 123192 |
| 4 | 15765120 |
| 5 | 2346549000 |
| 6 | 384790520160 |
| 7 | 67502621079768 |
| 8 | 12445136548416000 |
| 9 | 2383639140696105600 |
| 10 | 470536087106183748000 |
| 11 | 95188348079916284698296 |
| 12 | 19650775121845025331180672 |