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A110609 as a simple table

na(n)
00
11
28
345
4224
51050
64752
721021
891520
9393822
101679600
117113106
1229953728
13125550100
14524190240
152181340125
169051563520
1737467344310
18154754938800
19637982011590
202625648168000
2110789623755820
2244277560801760
23181478535620850
24742984788858624

[0,1,8,45,224,1050,4752,21021,91520,393822,
 1679600,7113106,29953728,125550100,524190240,
 2181340125,9051563520,37467344310,154754938800,
 637982011590,2625648168000,10789623755820,
 44277560801760,181478535620850,742984788858624]