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 | 14 |
| 2 | -46 |
| 3 | -7420 |
| 4 | -70484 |
| 5 | 6195784 |
| 6 | 172026616 |
| 7 | -6587905744 |
| 8 | -383643767920 |
| 9 | 7383172769504 |
| 10 | 938940545302816 |
| 11 | -4722110467960256 |
| 12 | -2565569278147539776 |
| 13 | -22204961095108973440 |
| 14 | 7760411493720634507136 |
| 15 | 183876169102318085114624 |
| 16 | -25596027354773450069298944 |