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A137499 as a simple table

na(n)
10
20
30
40
50
624
7-360
8720
92520
10-15120
1115120
120
13141120
14-423360
15282240
16-169344
170
185080320
19-10160640
205080320
210
22-15240960
230
24152409600
25-228614400
2691445760

[0,0,0,0,0,24,-360,720,2520,-15120,15120,0,141120,
 -423360,282240,-169344,0,5080320,-10160640,
 5080320,0,-15240960,0,152409600,-228614400,
 91445760]