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A009163 as a simple table

na(n)
01
10
20
30
412
5-60
6570
7-3780
836960
9-326592
103712200
11-41836080
12554861736
13-7563345504
14114963916704
15-1819859452320
1631173297642240
17-558346710891904
1810642982507666880
19-212150797420894848
204456607540110934912

[1,0,0,0,12,-60,570,-3780,36960,-326592,3712200,
 -41836080,554861736,-7563345504,114963916704,
 -1819859452320,31173297642240,-558346710891904,
 10642982507666880,-212150797420894848,
 4456607540110934912]