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 | 36 |
| 3 | 144 |
| 4 | 1600 |
| 5 | 32400 |
| 6 | 1016064 |
| 7 | 45158400 |
| 8 | 2687385600 |
| 9 | 205752960000 |
| 10 | 19670999040000 |
| 11 | 2294425328025600 |
| 12 | 320461058211840000 |
| 13 | 52778155948277760000 |
| 14 | 10118415696592896000000 |
| 15 | 2233485391313240064000000 |