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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 2504 |
| 3 | 1721024 |
| 4 | 4004836544 |
| 5 | 34371837694976 |
| 6 | 1144244247852783104 |
| 7 | 150756716920877640704000 |
| 8 | 79170171472489778115703918592 |
| 9 | 166116745151581288207313820694446080 |
| 10 | 1393704864012762439255232236469539465232384 |
| 11 | 46767149231853952372202508147249496634017589755904 |
| 12 | 6277066566013980877709014174399846162076444100155305361408 |
[1,8,2504,1721024,4004836544,34371837694976, 1144244247852783104,150756716920877640704000, 79170171472489778115703918592, 166116745151581288207313820694446080, 1393704864012762439255232236469539465232384, 46767149231853952372202508147249496634017589755904\ , 62770665660139808777090141743998461620764441001553\ 05361408] |