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 | 6 |
| 3 | 37 |
| 4 | 497 |
| 5 | 14033 |
| 6 | 813857 |
| 7 | 95996993 |
| 8 | 22913626241 |
| 9 | 11034472530177 |
| 10 | 10699863490757121 |
| 11 | 20863301244829828097 |
| 12 | 81721932792141693585409 |
| 13 | 642577422892784159654154241 |
| 14 | 10136733849914528413869372612609 |