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 | 0 |
| 2 | 33 |
| 3 | 192 |
| 4 | 4081 |
| 5 | 47936 |
| 6 | 733465 |
| 7 | 9925824 |
| 8 | 142150545 |
| 9 | 1982789568 |
| 10 | 27997733409 |
| 11 | 393091648000 |
| 12 | 5533702536417 |
| 13 | 77804055183232 |
| 14 | 1094555504869945 |
| 15 | 15394211168981632 |
| 16 | 216536449010819041 |
| 17 | 3045646510935265408 |