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A139545 as a simple table

na(n)
11
21
31
45
517
641
788
8190
9421
10935
112051
124445
139562
1420476
1543681
1692837
17196613
18415073
19873820
201835002
213844765
228039075
2316777223
2434952549
2572701278
26150994936
27313174681
28648719009
291342177289
302773833065
315726623072

[1,1,1,5,17,41,88,190,421,935,2051,4445,9562,
 20476,43681,92837,196613,415073,873820,1835002,
 3844765,8039075,16777223,34952549,72701278,
 150994936,313174681,648719009,1342177289,
 2773833065,5726623072]