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A052784 as a simple table

na(n)
00
10
20
30
40
50
6720
77560
850400
9272160
101300320
115738040
1223958000
1396061680
14373477104
151417295880
165274360000
1719313985600
1869770966976
19249130574424
20880629138000

[0,0,0,0,0,0,720,7560,50400,272160,1300320,
 5738040,23958000,96061680,373477104,1417295880,
 5274360000,19313985600,69770966976,249130574424,
 880629138000]