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 | 11 |
| 2 | 49 |
| 3 | -1045 |
| 4 | -22079 |
| 5 | 58091 |
| 6 | 8587441 |
| 7 | 69366539 |
| 8 | -3565038335 |
| 9 | -79170548149 |
| 10 | 1439268811441 |
| 11 | 72834751593131 |
| 12 | -338718631136831 |
| 13 | -66655130318970325 |
| 14 | -416165794764599759 |
| 15 | 62610547619111490251 |
| 16 | 1138175082155994132481 |
| 17 | -59607424953500501311861 |