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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 20 |
| 3 | 72 |
| 4 | 72 |
| 5 | 72 |
| 6 | 20 |
| 7 | 72 |
| 8 | 72 |
| 9 | 17280 |
| 10 | 4800 |
| 11 | 17280 |
| 12 | 72 |
| 13 | 17280 |
| 14 | 1152000 |
| 15 | 5184 |
| 16 | 5184 |
| 17 | 5184 |
| 18 | 96000 |
| 19 | 5184 |
| 20 | 345600 |
| 21 | 1244160 |
| 22 | 320000 |
| 23 | 1244160 |
| 24 | 82944000 |
| 25 | 89579520 |
| 26 | 71663616000 |
| 27 | 298598400 |
| 28 | 1244160 |
| 29 | 82944000 |
| 30 | 23040000 |
| 31 | 82944000 |
| 32 | 19906560000 |
[1,6,20,72,72,72,20,72,72,17280,4800,17280,72, 17280,1152000,5184,5184,5184,96000,5184,345600, 1244160,320000,1244160,82944000,89579520, 71663616000,298598400,1244160,82944000,23040000, 82944000,19906560000] |