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) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 15 |
| 4 | -99 |
| 5 | -199 |
| 6 | -800 |
| 7 | -79201 |
| 8 | -316808 |
| 9 | -12545596801 |
| 10 | -50182387208 |
| 11 | -314783998186522867201 |
| 12 | -1259135992746091468808 |
| 13 | -198177931028585663493396958369763763148801 |
| 14 | -792711724114342653973587833479055052595208 |