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A056466 as a simple table

na(n)
10
20
30
40
50
60
70
80
9120
10120
111800
121800
1316800
1416800
15126000
16126000
17834120
18834000
195103000
205102880
2129607600
2229605800
23165528000
24165526200
25901020120
26901003320
274809004080
284808987400
2925292030400
3025291904280
31131542866000
32131542740000

[0,0,0,0,0,0,0,0,120,120,1800,1800,16800,16800,
 126000,126000,834120,834000,5103000,5102880,
 29607600,29605800,165528000,165526200,901020120,
 901003320,4809004080,4808987400,25292030400,
 25291904280,131542866000,131542740000]