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A279335 as a simple table

na(n)
01
11
22
33
424
560
6720
72520
840320
925920
103628800
1119958400
12479001600
133113510400
1487178291200
15653837184000
162988969984000
171243662336000
186402373705728000
195529322745856000
20143111882833920000
21115590366904320000
221124000727777607680000

[1,1,2,3,24,60,720,2520,40320,25920,3628800,
 19958400,479001600,3113510400,87178291200,
 653837184000,2988969984000,1243662336000,
 6402373705728000,5529322745856000,
 143111882833920000,115590366904320000,
 1124000727777607680000]