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 | 4 |
| 2 | 92 |
| 3 | 10416 |
| 4 | 5258872 |
| 5 | 11297164096 |
| 6 | 100955979001152 |
| 7 | 3709635244861142784 |
| 8 | 556796318904269731012544 |
| 9 | 339945532169833436692992549888 |
| 10 | 841788571395046141591475043524725760 |