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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 6 |
| 5 | 1 |
| 6 | 1 |
| 7 | 40 |
| 8 | 40 |
| 9 | 1 |
| 10 | 1 |
| 11 | 300 |
| 12 | 2000 |
| 13 | 300 |
| 14 | 1 |
| 15 | 1 |
| 16 | 2520 |
| 17 | 126000 |
| 18 | 126000 |
| 19 | 2520 |
| 20 | 1 |
| 21 | 1 |
| 22 | 23520 |
| 23 | 9878400 |
| 24 | 74088000 |
| 25 | 9878400 |
| 26 | 23520 |
| 27 | 1 |
| 28 | 1 |
| 29 | 241920 |
| 30 | 948326400 |
| 31 | 59744563200 |
| 32 | 59744563200 |
| 33 | 948326400 |
| 34 | 241920 |
| 35 | 1 |
| 36 | 1 |
| 37 | 2721600 |
| 38 | 109734912000 |
| 39 | 64524128256000 |
| 40 | 542002677350400 |
| 41 | 64524128256000 |
| 42 | 109734912000 |
| 43 | 2721600 |
| 44 | 1 |
[1,1,1,1,6,1,1,40,40,1,1,300,2000,300,1,1,2520, 126000,126000,2520,1,1,23520,9878400,74088000, 9878400,23520,1,1,241920,948326400,59744563200, 59744563200,948326400,241920,1,1,2721600, 109734912000,64524128256000,542002677350400, 64524128256000,109734912000,2721600,1] |