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A280889 as a simple table

na(n)
01
11
24
375
456
56930
628512
72849847
8972400
9693870606
1099936200
1163488350926
12475814969280
13166184959669300
14497980728000
1578877488833249175
161489333512849120
171116126129558913110
181597083864660900000
194467282986266589095530
20107279471180408841600

[1,1,4,75,56,6930,28512,2849847,972400,693870606,
 99936200,63488350926,475814969280,166184959669300,
 497980728000,78877488833249175,1489333512849120,
 1116126129558913110,1597083864660900000,
 4467282986266589095530,107279471180408841600]