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 | 6 |
| 2 | 79 |
| 3 | 1158 |
| 4 | 17851 |
| 5 | 283246 |
| 6 | 4579306 |
| 7 | 75013112 |
| 8 | 1240774907 |
| 9 | 20677408080 |
| 10 | 346638007264 |
| 11 | 5839169781594 |
| 12 | 98755770443674 |
| 13 | 1675855850883818 |
| 14 | 28520685212980872 |
| 15 | 486589040917153648 |
| 16 | 8319672542504635643 |