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A104489 as a simple table

na(n)
11
21
33
41
55
65
73
81
99
109
1111
121
135
145
153
161
1717
1817
1919
2017
215
225
233
241
259
269
2711
281
295
305
313
321

[1,1,3,1,5,5,3,1,9,9,11,1,5,5,3,1,17,17,19,17,5,5,
 3,1,9,9,11,1,5,5,3,1]