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A177759 as a simple table

na(n)
10
20
30
40
50
62304
735280
8811008
95080320
1038784000
11153679680
12699678720
132120152320
147113012480
1518036018000
1649416536064
17110279070720
18261526745088
19530024705280
201128038400000

[0,0,0,0,0,2304,35280,811008,5080320,38784000,
 153679680,699678720,2120152320,7113012480,
 18036018000,49416536064,110279070720,261526745088,
 530024705280,1128038400000]