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 | 0 |
| 1 | 1 |
| 2 | 32 |
| 3 | 2025 |
| 4 | 204800 |
| 5 | 30525625 |
| 6 | 6307891200 |
| 7 | 1727713080625 |
| 8 | 606076928000000 |
| 9 | 265058191985900625 |
| 10 | 141409376995328000000 |
| 11 | 90403125002859606705625 |
| 12 | 68229510086445571768320000 |
| 13 | 60026603304487418050791015625 |
| 14 | 60893916244529680380723200000000 |