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A117481 as a simple table

na(n)
11
22
36
412
560
630
7210
856
9504
105040
1155440
12132
131716
14182
152730
1643680
17742560
18306
195814
20380
217980
22175560
234037880
24552
2513800
26358800
279687600
28271252800
297866331200
30870
3126970
32992
3332736
341113024
3538955840
361402410240
3751889178880

[1,2,6,12,60,30,210,56,504,5040,55440,132,1716,
 182,2730,43680,742560,306,5814,380,7980,175560,
 4037880,552,13800,358800,9687600,271252800,
 7866331200,870,26970,992,32736,1113024,38955840,
 1402410240,51889178880]