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 | 1 |
| 2 | 36 |
| 3 | 1836 |
| 4 | 107406 |
| 5 | 6766578 |
| 6 | 446594148 |
| 7 | 30432201228 |
| 8 | 2122646035653 |
| 9 | 150707868531363 |
| 10 | 10850966534258136 |
| 11 | 790147653994615176 |
| 12 | 58075852568604215436 |
| 13 | 4302080463351219958836 |
| 14 | 320812285981333831216056 |
| 15 | 24060921448600037341204200 |
| 16 | 1813591954188227814593266575 |