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A302198 as a simple table

na(n)
00
14
2-7
336
4-282
52952
6-38640
7606960
8-11123280
9232968960
10-5489285760
11143711366400
12-4138653657600
13130021631308800
14-4425213650457600
15162195036421017600
16-6369481772349696000
17266808316331741184000
18-11874725090839683072000

[0,4,-7,36,-282,2952,-38640,606960,-11123280,
 232968960,-5489285760,143711366400,-4138653657600,
 130021631308800,-4425213650457600,
 162195036421017600,-6369481772349696000,
 266808316331741184000,-11874725090839683072000]