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 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 27 |
| 6 | 165 |
| 7 | 676 |
| 8 | 3584 |
| 9 | 19108 |
| 10 | 80754 |
| 11 | 386776 |
| 12 | 1807342 |
| 13 | 8218582 |
| 14 | 114618650 |
| 15 | 1410831012 |
| 16 | 12144300991 |
| 17 | 126350575684 |