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 | 0 |
| 2 | 8 |
| 3 | 800 |
| 4 | 78408 |
| 5 | 7683200 |
| 6 | 752875208 |
| 7 | 73774087200 |
| 8 | 7229107670408 |
| 9 | 708378777612800 |
| 10 | 69413891098384008 |
| 11 | 6801852948864020000 |
| 12 | 666512175097575576008 |
| 13 | 65311391306613542428800 |
| 14 | 6399849835873029582446408 |
| 15 | 627119972524250285537319200 |