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A067684 as a simple table

na(n)
12
216
3130
4192
5448
61120
713468
823296
97176640
10135939072
11581150416
123259721920
139517877824
1421538220800

[2,16,130,192,448,1120,13468,23296,7176640,
 135939072,581150416,3259721920,9517877824,
 21538220800]