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A352881 as a simple table

na(n)
12
212
360
4840
59240
655440
7720720
86126120
9116396280
10232792560
115354228880
1226771144400
13465817912560
144813451763120
1524067258815600
16144403552893600
172671465728531600
1836510031623265200
19219060189739591200
204709794079401210800
2118839176317604843200
22221360321731856907600

[2,12,60,840,9240,55440,720720,6126120,116396280,
 232792560,5354228880,26771144400,465817912560,
 4813451763120,24067258815600,144403552893600,
 2671465728531600,36510031623265200,
 219060189739591200,4709794079401210800,
 18839176317604843200,221360321731856907600]