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 | 10 |
| 2 | 69300 |
| 3 | 9729720 |
| 4 | 4257000 |
| 5 | 967412160 |
| 6 | 4104100000 |
| 7 | 1408951239696000 |
| 8 | 59860503846000000 |
| 9 | 1542547619019487080000 |
| 10 | 39054496014386012160000 |
| 11 | 450510331438947780000000 |