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A032913 as a simple table

na(n)
11
23
37
49
519
621
743
845
955
1057
11115
12117
13127
14129
15259
16261
17271
18273
19331
20333
21343
22345
23691
24693
25703
26705
27763
28765
29775
30777
311555
321557
331567
341569
351627
361629
371639
381641
391987
401989
411999
422001
432059
442061
452071
462073

[1,3,7,9,19,21,43,45,55,57,115,117,127,129,259,
 261,271,273,331,333,343,345,691,693,703,705,763,
 765,775,777,1555,1557,1567,1569,1627,1629,1639,
 1641,1987,1989,1999,2001,2059,2061,2071,2073]