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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 16 |
| 4 | 48 |
| 5 | 10140 |
| 6 | 6552 |
| 7 | 721125376 |
| 8 | 3620732928 |
| 9 | 278799279816 |
| 10 | 29925033224 |
| 11 | 229926056690973293936640 |
| 12 | 892398340719534485274624 |
| 13 | 603207249820766251389767637583758341569376980491272 |
| 14 | 240171846906336440253785749946778562802349467993472 |
[1,2,16,48,10140,6552,721125376,3620732928, 278799279816,29925033224,229926056690973293936640, 892398340719534485274624, 60320724982076625138976763758375834156937698049127\ 2, 24017184690633644025378574994677856280234946799347\ 2] |