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) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 1296 |
| 3 | 3456 |
| 4 | 3240000 |
| 5 | 144000 |
| 6 | 1555848000 |
| 7 | 59270400 |
| 8 | 5000940000 |
| 9 | 1587600 |
| 10 | 9762501672000 |
| 11 | 11269843200 |
| 12 | 221794053611130000 |
| 13 | 39390663312000 |
| 14 | 5849513501832000 |
| 15 | 519437318400 |
| 16 | 407131014322092060000 |
| 17 | 1063331477208000 |