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A130412 as a simple table

na(n)
12
25
3140
4105
52310
615015
7120120
885085
99699690
104849845
11446185740
12557732175
133346393050
1448522699225
1524067258815600
161504203675975
173008407351950
1855655536011075
19222622144044300
202281876976454075

[2,5,140,105,2310,15015,120120,85085,9699690,
 4849845,446185740,557732175,3346393050,
 48522699225,24067258815600,1504203675975,
 3008407351950,55655536011075,222622144044300,
 2281876976454075]