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 | 3 |
| 2 | 39 |
| 3 | 949 |
| 4 | 36573 |
| 5 | 2029551 |
| 6 | 152451283 |
| 7 | 14840686449 |
| 8 | 1812664465209 |
| 9 | 270925848659323 |
| 10 | 48571769994336831 |
| 11 | 10276325760127883853 |
| 12 | 2531148652596607988629 |
| 13 | 717525135328209346300839 |
| 14 | 231804543407519025287933163 |