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A203523 as a simple table

na(n)
11
25
3140
425200
555036800
6951035904000
7222618484408320000
8440079343769868042240000
912254449406615745504215040000000
107909254579604123100510930935480320000000
1148073937540175558516708030362614204937011200000000

[1,5,140,25200,55036800,951035904000,
 222618484408320000,440079343769868042240000,
 12254449406615745504215040000000,
 7909254579604123100510930935480320000000,
 48073937540175558516708030362614204937011200000000\
 ]