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A014921 as a simple table

na(n)
11
217
3209
42257
522737
6219345
72054353
818831569
9169826513
101512003793
1113323163857
12116402378961
131009755576529
148706336970961
1574677034637521
16637626988058833
175422701592139985
1845955098238474449

[1,17,209,2257,22737,219345,2054353,18831569,
 169826513,1512003793,13323163857,116402378961,
 1009755576529,8706336970961,74677034637521,
 637626988058833,5422701592139985,
 45955098238474449]