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 | 8 |
| 3 | 162 |
| 4 | 6144 |
| 5 | 375000 |
| 6 | 33592320 |
| 7 | 4150656720 |
| 8 | 676457349120 |
| 9 | 140587147048320 |
| 10 | 36288000000000000 |
| 11 | 11388728893445164800 |
| 12 | 4270826380475341209600 |
| 13 | 1886009588552176549862400 |
| 14 | 968725766854884321342259200 |
| 15 | 572622616354851562500000000000 |