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A218189 as a simple table

na(n)
11
23
37
415
529
657
7113
8225
9449
10895
111783
123551
137073
1414089
1528065
1655905
17111361
18221827
19441871
20880191
211753309
223492529
236956993
2413858081
2527604801
2654987775
27109533679
28218187167
29434621025
30865749521
311724542049
323435226017

[1,3,7,15,29,57,113,225,449,895,1783,3551,7073,
 14089,28065,55905,111361,221827,441871,880191,
 1753309,3492529,6956993,13858081,27604801,
 54987775,109533679,218187167,434621025,865749521,
 1724542049,3435226017]