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A078992 as a simple table

na(n)
01
11
21
3-2
4-6
5-2
66
736
824
912
10-24
11-240
12-240
13-240
14-72
15120
161800
172400
183600
192160
20600
21-720
22-15120
23-25200
24-50400
25-45360
26-25200
27-5760
285040
29141120
30282240
31705600
32846720
33705600
34322560
3565520

[1,1,1,-2,-6,-2,6,36,24,12,-24,-240,-240,-240,-72,
 120,1800,2400,3600,2160,600,-720,-15120,-25200,
 -50400,-45360,-25200,-5760,5040,141120,282240,
 705600,846720,705600,322560,65520]