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 | 19 |
| 3 | 1279 |
| 4 | 190769 |
| 5 | 50664371 |
| 6 | 21139541089 |
| 7 | 12783260017161 |
| 8 | 10590309839157381 |
| 9 | 11531675416606553251 |
| 10 | 15987041289872773372042 |
| 11 | 27515661456632011548886402 |
| 12 | 57600689265868641385517070539 |