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A113551 as a simple table

na(n)
11
28
3105
41920
545045
61290240
743648605
81703116800
975293843625
103719607091200
11203067496256625
1212140797545676800
13788917222956988125
1455362036808286208000
154172583192219510193125
16336158287499913854976000

[1,8,105,1920,45045,1290240,43648605,1703116800,
 75293843625,3719607091200,203067496256625,
 12140797545676800,788917222956988125,
 55362036808286208000,4172583192219510193125,
 336158287499913854976000]