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 | 8 |
| 2 | -386 |
| 3 | -10288 |
| 4 | 438796 |
| 5 | 22028768 |
| 6 | -811060856 |
| 7 | -65966160448 |
| 8 | 2027112412816 |
| 9 | 253695076915328 |
| 10 | -6180244656582176 |
| 11 | -1191069803371633408 |
| 12 | 21063652623108703936 |
| 13 | 6600286159191690034688 |
| 14 | -70420078571652397748096 |
| 15 | -42145163431480866400519168 |
| 16 | 138174222906806753595494656 |