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A133966 as a simple table

na(n)
13389
223929
331193
437199
537463
637547
737607
837717
937853
1037907
1141863
1241887
1341941
1473331
1574759
1674771
1777269
1877797
1983383
20112909
21114773
22131321
23131783
24132971
25134753
26191231
27193463
28223241
29223313
30223331
31223337
32223547
33231277

[3389,23929,31193,37199,37463,37547,37607,37717,
 37853,37907,41863,41887,41941,73331,74759,74771,
 77269,77797,83383,112909,114773,131321,131783,
 132971,134753,191231,193463,223241,223313,223331,
 223337,223547,231277]