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A004671 as a simple table

na(n)
01
10
239600
387859200
420779902000
51441891123200
646065617928000
7861717856665600
810894640750334000
9102119813013504000
10755967560945968800
114623420024622080000
1224151651608982497600
13110516220812493619200

[1,0,39600,87859200,20779902000,1441891123200,
 46065617928000,861717856665600,10894640750334000,
 102119813013504000,755967560945968800,
 4623420024622080000,24151651608982497600,
 110516220812493619200]