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A052743 as a simple table

na(n)
00
11
22
36
448
5480
65040
765520
81048320
918869760
10377395200
118462361600
12209802700800
135666588928000
14165900288153600
155242466541312000
16177718177308672000
176430828699975680000
18247490157968621568000

[0,1,2,6,48,480,5040,65520,1048320,18869760,
 377395200,8462361600,209802700800,5666588928000,
 165900288153600,5242466541312000,
 177718177308672000,6430828699975680000,
 247490157968621568000]