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 | 8 |
| 3 | 52 |
| 4 | 548 |
| 5 | 9852 |
| 6 | 323988 |
| 7 | 20589852 |
| 8 | 2599737428 |
| 9 | 658007495452 |
| 10 | 334291709264468 |
| 11 | 340646270830877852 |
| 12 | 695599447171017236308 |
| 13 | 2844303802537519899994652 |
| 14 | 23277772627131826189210443348 |