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A010799 as a simple table

na(n)
11
2720
31814400
412192768000
5184354652160000
65574884681318400000
7309071606732292096000000
829374165503837040803840000000
94536546120412592581745049600000000

[1,720,1814400,12192768000,184354652160000,
 5574884681318400000,309071606732292096000000,
 29374165503837040803840000000,
 4536546120412592581745049600000000]