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A231432 as a simple table

na(n)
13
27
313
419
531
641
747
853
961
1071
1179
1289
13101
14107
15113
16139
17151
18173
19193
20199
21223
22229
23239
24251
25271
26281
27293
28349
29373
30397
31433
32457
33463
34521
35541
36557
37569
38593
39601
40613
41619
42641
43647
44673
45683
46743
47787
48809
49839
50911
51941
52953
53971
541013
551049

[3,7,13,19,31,41,47,53,61,71,79,89,101,107,113,
 139,151,173,193,199,223,229,239,251,271,281,293,
 349,373,397,433,457,463,521,541,557,569,593,601,
 613,619,641,647,673,683,743,787,809,839,911,941,
 953,971,1013,1049]