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A362786 as a simple table

na(n)
30
40
50
65
763
8476
92772
1013680
1160060
12241472
13906048
143214848
1510890880
1635481600
17111794176
18342171648
191021031424
202979102720
218520171520
2223934468096
2366156625920
24180198047744
25484304486400
261285790105600
273375480176640
288769899593728
2922567515586560
3057557594931200

[0,0,0,5,63,476,2772,13680,60060,241472,906048,
 3214848,10890880,35481600,111794176,342171648,
 1021031424,2979102720,8520171520,23934468096,
 66156625920,180198047744,484304486400,
 1285790105600,3375480176640,8769899593728,
 22567515586560,57557594931200]