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A242154 as a simple table

na(n)
21
32
46
520
680
7366
81897
910976
1070155
11490930
123733246
1330655152
14270334766
152548153230
1625566585450
17272052199520
183060191748695
1936282298766760
20452220051658265
215911274512571280
2280862988937379390
231155309461910323610
2417208404375488550100

[1,2,6,20,80,366,1897,10976,70155,490930,3733246,
 30655152,270334766,2548153230,25566585450,
 272052199520,3060191748695,36282298766760,
 452220051658265,5911274512571280,
 80862988937379390,1155309461910323610,
 17208404375488550100]