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 | 5 |
| 3 | 19 |
| 4 | 126 |
| 5 | 3175 |
| 6 | 99682 |
| 7 | 4279111 |
| 8 | 540319235 |
| 9 | 108762242579 |
| 10 | 33338094951563 |
| 11 | 23051383345794169 |
| 12 | 28507330662583210289 |
| 13 | 58989477569892970363690 |
| 14 | 240856095225813296736743615 |