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 | 1 |
| 3 | 64 |
| 4 | 1 |
| 5 | 8000 |
| 6 | 280 |
| 7 | 1 |
| 8 | 1728000 |
| 9 | 104040 |
| 10 | 792 |
| 11 | 1 |
| 12 | 592704000 |
| 13 | 54996480 |
| 14 | 681408 |
| 15 | 1792 |
| 16 | 1 |
| 17 | 303464448000 |
| 18 | 40685137920 |
| 19 | 736404480 |
| 20 | 3066560 |
| 21 | 3520 |
| 22 | 1 |
| 23 | 221225582592000 |
| 24 | 40988602368000 |
| 25 | 1020839500800 |
| 26 | 6035420160 |
| 27 | 10800000 |
| 28 | 6264 |
| 29 | 1 |
| 30 | 221225582592000000 |
| 31 | 54777055334400000 |
| 32 | 1804999259750400 |
| 33 | 14280657592320 |
| 34 | 35670620160 |
| 35 | 31941000 |
| 36 | 10360 |
| 37 | 1 |