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) |
|---|---|
| 3 | 3 |
| 4 | 52 |
| 5 | 575 |
| 6 | 5470 |
| 7 | 49303 |
| 8 | 436446 |
| 9 | 3850752 |
| 10 | 34063392 |
| 11 | 302790797 |
| 12 | 2706629188 |
| 13 | 24332099665 |
| 14 | 219940720414 |