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A147859 as a simple table

na(n)
10
20
30
45832
51228800
6384375000
7153080202240
877461492681776
948745516577587200
1037439062705187626320
1134519165560000000000000
1237661140521028611405206520
1348018043198541202818460549120
1470773783408692477397888505288296
15119443378434420330312430518726819840

[0,0,0,5832,1228800,384375000,153080202240,
 77461492681776,48745516577587200,
 37439062705187626320,34519165560000000000000,
 37661140521028611405206520,
 48018043198541202818460549120,
 70773783408692477397888505288296,
 119443378434420330312430518726819840]