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A052718 as a simple table

na(n)
00
11
24
324
4240
53360
660480
71330560
834594560
91037836800
1035286451200
111340885145600
1256317176115200
132590590101299200
14129529505064960000
156994593273507840000
16405686409863454720000
1725152557411534192640000

[0,1,4,24,240,3360,60480,1330560,34594560,
 1037836800,35286451200,1340885145600,
 56317176115200,2590590101299200,
 129529505064960000,6994593273507840000,
 405686409863454720000,25152557411534192640000]