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A095998 as a simple table

na(n)
10
21
35
42
534
6324
72988
828944
9300816
103371040
11793440
1249438080
131121696640
1421930773760
15416139897600
167965912729600
17156343306291200
183169866941337600
1966629845591142400
201454242012231680000

[0,1,5,2,34,324,2988,28944,300816,3371040,793440,
 49438080,1121696640,21930773760,416139897600,
 7965912729600,156343306291200,3169866941337600,
 66629845591142400,1454242012231680000]