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A012633 as a simple table

na(n)
01
10
2-12
3360
4-9968
5-20160
662513088
7-11126763648
81288066390272
919652873951232
10-83472832434404352
1136956701107235768320
12-9713959158890293555200
13-340935340396162516992000

[1,0,-12,360,-9968,-20160,62513088,-11126763648,
 1288066390272,19652873951232,-83472832434404352,
 36956701107235768320,-9713959158890293555200,
 -340935340396162516992000]