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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 32 |
| 5 | 4608 |
| 6 | 7028736 |
| 7 | 132089118720 |
| 8 | 34998332896051200 |
| 9 | 147462169661142781132800 |
| 10 | 11008782516353752266715850342400 |
| 11 | 16061608070479103314001351327405309952000 |
| 12 | 500842967990688435516159987675099451681186775040000 |
[1,1,2,32,4608,7028736,132089118720, 34998332896051200,147462169661142781132800, 11008782516353752266715850342400, 16061608070479103314001351327405309952000, 50084296799068843551615998767509945168118677504000\ 0] |