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A052636 as a simple table

na(n)
02
11
26
36
4120
5120
66480
75040
8685440
9362880
10119750400
1139916800
1231135104000
136227020800
1411245999564800
151307674368000
165377157001216000
17355687428096000
183284417711038464000

[2,1,6,6,120,120,6480,5040,685440,362880,
 119750400,39916800,31135104000,6227020800,
 11245999564800,1307674368000,5377157001216000,
 355687428096000,3284417711038464000]