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 | 1 |
| 2 | 12 |
| 3 | 315 |
| 4 | 15088 |
| 5 | 1141625 |
| 6 | 124989156 |
| 7 | 18659050795 |
| 8 | 3638892086208 |
| 9 | 897534389449809 |
| 10 | 272981684150035300 |
| 11 | 100316132701760094251 |
| 12 | 43802068733570039425776 |
| 13 | 22409162143775383385763913 |
| 14 | 13274030650412266312507931652 |