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A134241 as a simple table

na(n)
10
20
30
4384
54800
625920
791200
8248640
9572544
101169280
112183040
123801600
136262080
149856704
1514938560
1621927360
1731315200
1843672320
1959652864
2080000640
21105554880
22137256000
23176151360
24223401024
25280283520
26348201600
27428688000
28523411200

[0,0,0,384,4800,25920,91200,248640,572544,1169280,
 2183040,3801600,6262080,9856704,14938560,21927360,
 31315200,43672320,59652864,80000640,105554880,
 137256000,176151360,223401024,280283520,348201600,
 428688000,523411200]