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) |
|---|---|
| 1 | 1 |
| 2 | 73 |
| 3 | 15945 |
| 4 | 6993073 |
| 5 | 5124715761 |
| 6 | 5641397595321 |
| 7 | 8700819552421753 |
| 8 | 17898786381229403105 |
| 9 | 47345052327747786859873 |
| 10 | 156535091017683923932912041 |
| 11 | 632460052562874236182866885161 |