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A241080 as a simple table

na(n)
13
28
318
436
572
6420
7720
8840
91260
103360
117560
1220160
13554400
142882880
154324320
1636756720
176983776800

[3,8,18,36,72,420,720,840,1260,3360,7560,20160,
 554400,2882880,4324320,36756720,6983776800]