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A020628 as a simple table

na(n)
13
25
37
411
513
617
723
841
943
1053
1171
1279
1383
14127
15131
16151
17239
18251
19383
20691
21719
221151

[3,5,7,11,13,17,23,41,43,53,71,79,83,127,131,151,
 239,251,383,691,719,1151]