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A373773 as a simple table

na(n)
01
11
22
37
436
5240
61930
717990
8189840
92233000
1028949200
11410009600
126297999400
13104275571400
141851050401200
1535065930299400
16705993054166400
1715051593241484800
18338705933426660800
198021585392026606400
20199416162740963168000
215191567315003621552000

[1,1,2,7,36,240,1930,17990,189840,2233000,
 28949200,410009600,6297999400,104275571400,
 1851050401200,35065930299400,705993054166400,
 15051593241484800,338705933426660800,
 8021585392026606400,199416162740963168000,
 5191567315003621552000]