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 | 1 |
| 2 | 280 |
| 3 | 8524 |
| 4 | 295840 |
| 5 | 10014256 |
| 6 | 340831360 |
| 7 | 11585508544 |
| 8 | 393929320960 |
| 9 | 13393420731136 |
| 10 | 455377714186240 |
| 11 | 15482831007960064 |
| 12 | 526416344465121280 |
| 13 | 17898154990259286016 |
| 14 | 608537275441252433920 |
| 15 | 20690267318823093059584 |