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 | 0 |
| 2 | 14 |
| 3 | 6300 |
| 4 | 19166 |
| 5 | 4766580 |
| 6 | 14316134 |
| 7 | 3485735820 |
| 8 | 10458256046 |
| 9 | 2541798719460 |
| 10 | 7625463267254 |
| 11 | 1853015893884540 |
| 12 | 5559051976620926 |
| 13 | 1350851442795085140 |
| 14 | 4052554603263162374 |
| 15 | 984770884591425188460 |
| 16 | 2954312671366461609806 |