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 | 14 |
| 3 | -688 |
| 4 | -7604 |
| 5 | 76768 |
| 6 | 2515144 |
| 7 | -2909248 |
| 8 | -903574384 |
| 9 | -6064895872 |
| 10 | 358089305824 |
| 11 | 5897162382592 |
| 12 | -149771819142464 |
| 13 | -4736471982694912 |
| 14 | 59459906581042304 |
| 15 | 3791209640534776832 |
| 16 | -14265252811503513344 |
| 17 | -3147089734919849572352 |