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 | 14 |
| 2 | 34 |
| 3 | -4060 |
| 4 | -73364 |
| 5 | 1603784 |
| 6 | 81877816 |
| 7 | -412588624 |
| 8 | -98625684080 |
| 9 | -846044720416 |
| 10 | 131951621302816 |
| 11 | 3217915145313344 |
| 12 | -190086977127231296 |
| 13 | -8916844722270378880 |
| 14 | 275487347718163805056 |
| 15 | 24080226698163512570624 |
| 16 | -332311081180848870297344 |