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A063744 as a simple table

na(n)
12
26
348
41240
546080
610537956
74755179520
821601740363840
9320026934857728000
105141450783421628416000
11254900463912224253775282176
1222582740409889438693597632266240

[2,6,48,1240,46080,10537956,4755179520,
 21601740363840,320026934857728000,
 5141450783421628416000,
 254900463912224253775282176,
 22582740409889438693597632266240]