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A140354 as a simple table

na(n)
01
120
2220
31760
411440
564064
6320320
71464320
86223360
924893440
1094595072
11343982080
121203937280
134074864640
1413388840960
1542844291072
16133888409600
17409541017600
181228623052800
193621204787200
2010501493882880
2130004268236800

[1,20,220,1760,11440,64064,320320,1464320,6223360,
 24893440,94595072,343982080,1203937280,4074864640,
 13388840960,42844291072,133888409600,409541017600,
 1228623052800,3621204787200,10501493882880,
 30004268236800]