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 | 156 |
| 3 | 4696 |
| 4 | 186406 |
| 5 | 9053640 |
| 6 | 515875660 |
| 7 | 33585910968 |
| 8 | 2453913830097 |
| 9 | 198609146859416 |
| 10 | 17630476159933080 |
| 11 | 1703025192274201272 |
| 12 | 177846105338917975896 |
| 13 | 19968484152350242447288 |