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A012360 as a simple table

na(n)
01
10
20
30
4-12
560
6-570
73780
8-26880
9145152
1067800
11-19702320
12483806664
13-8808530016
14143791860576
15-2098017710880
1626000312931840
17-200354333649536
18-2365679417115840
19173236427161446528

[1,0,0,0,-12,60,-570,3780,-26880,145152,67800,
 -19702320,483806664,-8808530016,143791860576,
 -2098017710880,26000312931840,-200354333649536,
 -2365679417115840,173236427161446528]