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A180072 as a simple table

na(n)
22
32
412
562
6384
72574
820432
9183790
101833102
1120075568
12240972780
133128714960
1443794182164
15656192916356
1610493589363960
17178319646743428

[2,2,12,62,384,2574,20432,183790,1833102,20075568,
 240972780,3128714960,43794182164,656192916356,
 10493589363960,178319646743428]