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 | 42 |
| 2 | -158 |
| 3 | -168084 |
| 4 | -6148500 |
| 5 | 1033992792 |
| 6 | 102514782264 |
| 7 | -7618384022256 |
| 8 | -1699206009514608 |
| 9 | 45773620326594720 |
| 10 | 31315357606300667424 |
| 11 | 435476036787477513408 |
| 12 | -643779296967334655115072 |
| 13 | -37082549785094436884075136 |
| 14 | 14528002423051857343574033280 |