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A056455 as a simple table

na(n)
10
20
30
40
50
60
724
824
9240
10240
111560
121560
138400
148400
1540824
1640824
17186480
18186480
19818520
20818520
213498000
223498000
2314676024
2414676024
2560780720
2660780720
27249401880
28249401880
291016542800
301016542800
314123173624
324123173624
3316664094960
3416664094960

[0,0,0,0,0,0,24,24,240,240,1560,1560,8400,8400,
 40824,40824,186480,186480,818520,818520,3498000,
 3498000,14676024,14676024,60780720,60780720,
 249401880,249401880,1016542800,1016542800,
 4123173624,4123173624,16664094960,16664094960]