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 | 0 |
| 2 | 4 |
| 3 | 54 |
| 4 | 1024 |
| 5 | 9375 |
| 6 | 326592 |
| 7 | 3294172 |
| 8 | 201326592 |
| 9 | 4649045868 |
| 10 | 110000000000 |
| 11 | 1426558353055 |
| 12 | 178322008965120 |
| 13 | 1817250639553518 |
| 14 | 166680102383370240 |
| 15 | 8319983917236328125 |
| 16 | 590295810358705651712 |
| 17 | 5790681833204357349239 |
| 18 | 1298431466484785739988992 |