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A130641 as a simple table

na(n)
00
11
22
36
424
5120
6720
75040
840321
9362891
103628916
1139918100
12479017320
136227225880
1487181167360
151307717550721
1620923481174427
17355699183594175
186402585344613250
19121649122026669070
202432982446760607280

[0,1,2,6,24,120,720,5040,40321,362891,3628916,
 39918100,479017320,6227225880,87181167360,
 1307717550721,20923481174427,355699183594175,
 6402585344613250,121649122026669070,
 2432982446760607280]