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A197650 as a simple table

na(n)
11
21
34
418
589
6914
714965
8321510
912712330
10879485238
11102013590235
1220591125917598
136951014585410261

[1,1,4,18,89,914,14965,321510,12712330,879485238,
 102013590235,20591125917598,6951014585410261]