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A159324 as a simple table

na(n)
00
10
22
316
4118
5926
67956
775132
8777456
98771184
10107307360
111416252960
1220068629120
13304002322560
144903642679040
1583928856838400
161519397749094400
1729010025797580800
18582647327132774400
1912280347845905305600
20271030782903552000000
216251213902855219200000

[0,0,2,16,118,926,7956,75132,777456,8771184,
 107307360,1416252960,20068629120,304002322560,
 4903642679040,83928856838400,1519397749094400,
 29010025797580800,582647327132774400,
 12280347845905305600,271030782903552000000,
 6251213902855219200000]