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 | 8 |
| 2 | 254 |
| 3 | 13614 |
| 4 | 1025048 |
| 5 | 99368620 |
| 6 | 11781698256 |
| 7 | 1651548277946 |
| 8 | 267197019684224 |
| 9 | 49000715036948304 |
| 10 | 10044513851042988800 |
| 11 | 2275926588768085912582 |
| 12 | 564838094735322988575744 |
| 13 | 152378369304839730672573044 |
| 14 | 44397985962782115253758973952 |