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| n | a(n) |
|---|---|
| 8 | 272 |
| 9 | 7936 |
| 10 | 176896 |
| 11 | 3610112 |
| 12 | 71867136 |
| 13 | 1436058624 |
| 14 | 29228559360 |
| 15 | 610801551360 |
| 16 | 13163645214720 |
| 17 | 293282162933760 |
| 18 | 6763255299440640 |
| 19 | 161506934017228800 |
| 20 | 3993863950953676800 |
| 21 | 102243157431032217600 |
| 22 | 2708346162794220748800 |
| 23 | 74189360770448110387200 |
| 24 | 2100168597930370007040000 |
[272,7936,176896,3610112,71867136,1436058624, 29228559360,610801551360,13163645214720, 293282162933760,6763255299440640, 161506934017228800,3993863950953676800, 102243157431032217600,2708346162794220748800, 74189360770448110387200,2100168597930370007040000] |