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A066424 as a simple table

na(n)
18
296
3960
49240
598280
6997920
79979200
899459360
9994593600
109777287520
1197772875200
12995886571680
139958865716800
1499588657168000
15998456601542400
169948906851083200
1798930408269492800
18994651672331116800
199946516723311168000
2099796717790555385600

[8,96,960,9240,98280,997920,9979200,99459360,
 994593600,9777287520,97772875200,995886571680,
 9958865716800,99588657168000,998456601542400,
 9948906851083200,98930408269492800,
 994651672331116800,9946516723311168000,
 99796717790555385600]