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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 32 |
| 3 | 486 |
| 4 | 6144 |
| 5 | 75000 |
| 6 | 933120 |
| 7 | 12101040 |
| 8 | 165150720 |
| 9 | 2380855680 |
| 10 | 36288000000 |
| 11 | 584421868800 |
| 12 | 9932577177600 |
| 13 | 177849941068800 |
| 14 | 3349041234739200 |
| 15 | 66201014880000000 |
| 16 | 1371195958099968000 |
| 17 | 29707369682006016000 |