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 | 26 |
| 3 | 2704 |
| 4 | 698568 |
| 5 | 384890688 |
| 6 | 378771904512 |
| 7 | 597991783196160 |
| 8 | 1450380828625459200 |
| 9 | 5077825865646165964800 |
| 10 | 24487520383436615392204800 |