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 | 2 |
| 2 | 16 |
| 3 | 378 |
| 4 | 30824 |
| 5 | 8402216 |
| 6 | 7664347268 |
| 7 | 23371379782671 |
| 8 | 238225926162821893 |
| 9 | 8118262028301675826132 |
| 10 | 924887563235974860108746534 |
| 11 | 352261845112790535941917078458268 |