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A052263 as a simple table

na(n)
10
20
30
40
51
6240
762720
823224320
913440516096
1012754259804160
1120377681883299840
1255671587500342640640
13262483693581093123915776
142147534811240814766425374720
1530585643102219392981931508367360

[0,0,0,0,1,240,62720,23224320,13440516096,
 12754259804160,20377681883299840,
 55671587500342640640,262483693581093123915776,
 2147534811240814766425374720,
 30585643102219392981931508367360]