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A009024 as a simple table

na(n)
00
11
20
3-3
412
5-50
6240
7-1330
88400
9-59580
10468000
11-4018300
1237237200
13-367507400
143802780800
15-40373385000
16423927504000
17-4048235126000
1825093796832000
19288695417426000
20-18721925937000000
21623644389813900000

[0,1,0,-3,12,-50,240,-1330,8400,-59580,468000,
 -4018300,37237200,-367507400,3802780800,
 -40373385000,423927504000,-4048235126000,
 25093796832000,288695417426000,-18721925937000000,
 623644389813900000]