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 | 5 |
| 2 | -988 |
| 3 | -58833 |
| 4 | -1047280 |
| 5 | -9757849 |
| 6 | -60419520 |
| 7 | -282195313 |
| 8 | -1072062208 |
| 9 | -3476706705 |
| 10 | -9939533824 |
| 11 | -25574627545 |
| 12 | -59740581888 |
| 13 | -124797797833 |
| 14 | -210890490880 |
| 15 | -106465406049 |
| 16 | 1721598279680 |
| 17 | 14910665544287 |