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A003740 as a simple table

na(n)
1208
2335344
3503672968
4757005488704
51137734095903816
61709944335224262352
72569941155563565968488
83862463470575397280285088
95805045002479537990606632936

[208,335344,503672968,757005488704,
 1137734095903816,1709944335224262352,
 2569941155563565968488,3862463470575397280285088,
 5805045002479537990606632936]