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A108729 as a simple table

na(n)
11
23
37
49
521
627
757
881
9111
10189
11243
12333
13441
14729
15777
16999
171161
181701
192109
202187
212529
222709
232763
242793
252997

[1,3,7,9,21,27,57,81,111,189,243,333,441,729,777,
 999,1161,1701,2109,2187,2529,2709,2763,2793,2997]