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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 2 |
| 3 | 8 |
| 4 | 380 |
| 5 | 21272 |
| 6 | 5350806 |
| 7 | 3238675344 |
| 8 | 6652506271144 |
| 9 | 38896105985522272 |
| 10 | 711716770252031164458 |
| 11 | 38776997923112110535353528 |
| 12 | 6460929292946758939597712150496 |
| 13 | 3245656750963660788826395580466708824 |
| 14 | 4953412325525289651086730443567098343730966 |
| 15 | 22873302288206466754758793232467436030071524731072 |
[1,0,2,8,380,21272,5350806,3238675344, 6652506271144,38896105985522272, 711716770252031164458,38776997923112110535353528, 6460929292946758939597712150496, 3245656750963660788826395580466708824, 4953412325525289651086730443567098343730966, 22873302288206466754758793232467436030071524731072\ ] |