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A099045 as a simple table

na(n)
01
12
224
3320
44480
564512
6946176
714057472
8210862080
93186360320
1048432676864
11739699064832
1211342052327424
13174493112729600
142692179453542400
1541639042214789120
16645405154329231360
1710022762396642181120
18155909637281100595200

[1,2,24,320,4480,64512,946176,14057472,210862080,
 3186360320,48432676864,739699064832,
 11342052327424,174493112729600,2692179453542400,
 41639042214789120,645405154329231360,
 10022762396642181120,155909637281100595200]