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 | -2 |
| 2 | -14 |
| 3 | -26 |
| 4 | 1330 |
| 5 | 23638 |
| 6 | -8414 |
| 7 | -10070426 |
| 8 | -215250350 |
| 9 | 1947801718 |
| 10 | 246368009986 |
| 11 | 5254817440774 |
| 12 | -152365259476430 |
| 13 | -13578534513671402 |
| 14 | -241920062298205214 |
| 15 | 18542492740003377574 |
| 16 | 1388279735908198531090 |