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A052655 as a simple table

na(n)
00
11
26
318
496
5600
64320
735280
8322560
93265920
1036288000
11439084800
125748019200
1380951270400
141220496076800
1519615115520000
16334764638208000
176046686277632000
18115242726703104000
192311256907767808000

[0,1,6,18,96,600,4320,35280,322560,3265920,
 36288000,439084800,5748019200,80951270400,
 1220496076800,19615115520000,334764638208000,
 6046686277632000,115242726703104000,
 2311256907767808000]