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 | 9 |
| 2 | 16 |
| 3 | 2116 |
| 4 | 44521 |
| 5 | 1525225 |
| 6 | 43731769 |
| 7 | 1250046736 |
| 8 | 36412654041 |
| 9 | 1023636039001 |
| 10 | 29395568245824 |
| 11 | 828988131959716 |
| 12 | 23599139118132769 |
| 13 | 667319223491080281 |
| 14 | 18929485248132797584 |
| 15 | 535857588485957276361 |
| 16 | 15182115680784904368400 |