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) |
|---|---|
| 2 | 1 |
| 3 | 133 |
| 4 | 19285 |
| 5 | 2775445 |
| 6 | 399683221 |
| 7 | 57554154133 |
| 8 | 8287800951445 |
| 9 | 1193443303932565 |
| 10 | 171855836163195541 |
| 11 | 24747240402737283733 |
| 12 | 3563602618051323347605 |
| 13 | 513158776998704708174485 |
| 14 | 73894863887821708223693461 |