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A309739 as a simple table

na(n)
13
25
37
411
513
617
719
8331
9661
10881
11991
1220201
1360601
1490901
152002001
165005001
17300030001
18600060001
1950000500001
202000002000001
218000008000001
229000009000001
233000000003000000001
24200000000020000000001
2580000000000800000000001

[3,5,7,11,13,17,19,331,661,881,991,20201,60601,
 90901,2002001,5005001,300030001,600060001,
 50000500001,2000002000001,8000008000001,
 9000009000001,3000000003000000001,
 200000000020000000001,80000000000800000000001]