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 | 1 |
| 2 | 8 |
| 3 | 120 |
| 4 | 2276 |
| 5 | 49204 |
| 6 | 1156688 |
| 7 | 28831384 |
| 8 | 750455268 |
| 9 | 20196669078 |
| 10 | 558157620384 |
| 11 | 15762232227968 |
| 12 | 453181069339660 |
| 13 | 13228272325440164 |
| 14 | 391166062869849024 |