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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 24 |
| 3 | 2 |
| 4 | 70 |
| 5 | 1680 |
| 6 | 55440 |
| 7 | 55440 |
| 8 | 65520 |
| 9 | 65520 |
| 10 | 5040 |
| 11 | 10080 |
| 12 | 5040 |
| 13 | 1627920 |
| 14 | 1627920 |
| 15 | 85680 |
| 16 | 942480 |
| 17 | 21677040 |
| 18 | 492660 |
| 19 | 107100 |
| 20 | 64260 |
| 21 | 621180 |
| 22 | 1242360 |
| 23 | 1328040 |
| 24 | 10624320 |
| 25 | 1328040 |
| 26 | 14608440 |
| 27 | 1217370 |
| 28 | 277560360 |
| 29 | 133506533160 |
[3,24,2,70,1680,55440,55440,65520,65520,5040, 10080,5040,1627920,1627920,85680,942480,21677040, 492660,107100,64260,621180,1242360,1328040, 10624320,1328040,14608440,1217370,277560360, 133506533160] |