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A154306 as a simple table

na(n)
01
132
2540
37680
4105000
51451520
620744640
7309657600
84849891200
979833600000
101381360780800
1125107347865600
12478826764416000
139568689242112000
14200074178304000000
154370687116443648000
1699607063051431936000

[1,32,540,7680,105000,1451520,20744640,309657600,
 4849891200,79833600000,1381360780800,
 25107347865600,478826764416000,9568689242112000,
 200074178304000000,4370687116443648000,
 99607063051431936000]