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A195504 as a simple table

na(n)
11
21
31
41
51
61
76
86
96
106
1160
1260
13720
14720
1510080
1610080
1710080
1810080
19181440
20181440
213628800
223628800
2379833600
2479833600
2579833600
2679833600
272075673600
282075673600
2958118860800
3058118860800
311743565824000
321743565824000
331743565824000
341743565824000

[1,1,1,1,1,1,6,6,6,6,60,60,720,720,10080,10080,
 10080,10080,181440,181440,3628800,3628800,
 79833600,79833600,79833600,79833600,2075673600,
 2075673600,58118860800,58118860800,1743565824000,
 1743565824000,1743565824000,1743565824000]