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 | 49248 |
| 3 | 11042304 |
| 4 | 6770802642 |
| 5 | 2705631701472 |
| 6 | 1359219630420288 |
| 7 | 633774007586896896 |
| 8 | 312343963839774306864 |
| 9 | 152751427857668869125990 |
| 10 | 75972914003765783253275712 |
| 11 | 37915118574439727639476081152 |
| 12 | 19063775719322131645175269693920 |