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A056346 as a simple table

na(n)
10
20
30
40
50
660
71080
811970
9105840
10821952
115874480
1239713550
13258136200
141631273220
1510096734312
1661536377700
17370710950400
182213749658880
1913132080672480
2077509456944318
21455754569692680

[0,0,0,0,0,60,1080,11970,105840,821952,5874480,
 39713550,258136200,1631273220,10096734312,
 61536377700,370710950400,2213749658880,
 13132080672480,77509456944318,455754569692680]