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A286483 as a simple table

na(n)
01
10
25
30
4238
50
651508
70
835028576
90
1059053389408
110
12209726098354368
130
141397532391623302400
150
1616043549794523492290560
170
18297285345537576037788672000
190
208447414796960536731803240038400

[1,0,5,0,238,0,51508,0,35028576,0,59053389408,0,
 209726098354368,0,1397532391623302400,0,
 16043549794523492290560,0,
 297285345537576037788672000,0,
 8447414796960536731803240038400]