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A181335 as a simple table

na(n)
01
14
296
318432
431850496
5550376570880
6114126085737676800
7331312591939905257472000
814427205603578338379772723200000
910051861189298894268003697526046720000000

[1,4,96,18432,31850496,550376570880,
 114126085737676800,331312591939905257472000,
 14427205603578338379772723200000,
 10051861189298894268003697526046720000000]