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A111950 as a simple table

na(n)
13
25
35
49419
5909287
6325267931
7678771479
81107819732821
9170669145704411
103324648277099157
11789795449254776509

[3,5,5,9419,909287,325267931,678771479,
 1107819732821,170669145704411,3324648277099157,
 789795449254776509]