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A195506 as a simple table

na(n)
11
28
3216
41728
5216000
6216000
774088000
8592704000
916003008000
1016003008000
1121300003648000
1221300003648000
1346796108014656000
1446796108014656000
1546796108014656000
16374368864117248000
171839274229408039424000
181839274229408039424000

[1,8,216,1728,216000,216000,74088000,592704000,
 16003008000,16003008000,21300003648000,
 21300003648000,46796108014656000,
 46796108014656000,46796108014656000,
 374368864117248000,1839274229408039424000,
 1839274229408039424000]