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 | 14 |
| 3 | -7520 |
| 4 | -130484 |
| 5 | 5191616 |
| 6 | 240951496 |
| 7 | -3683002496 |
| 8 | -467099874160 |
| 9 | -343305154304 |
| 10 | 1011850643451616 |
| 11 | 17020408768641536 |
| 12 | -2421219872569937216 |
| 13 | -88166785025254016000 |
| 14 | 6206489158700958225536 |
| 15 | 398012894204775937816576 |
| 16 | -16161349338808063353630464 |