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 | 22 |
| 2 | 34 |
| 3 | -19052 |
| 4 | -465044 |
| 5 | 24062632 |
| 6 | 1575726904 |
| 7 | -30303114512 |
| 8 | -5630208266864 |
| 9 | -14773369627808 |
| 10 | 22477329348987424 |
| 11 | 560981409002859328 |
| 12 | -98921189279424843584 |
| 13 | -5205565772762786930048 |
| 14 | 464166510283854022505344 |
| 15 | 43006727594650346154419968 |