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A191054 as a simple table

na(n)
15
219
323
429
531
641
743
847
953
1059
1173
1279
1383
1489
1597
16107
17113
18127
19167
20179
21191
22211
23223
24227
25229
26233
27241
28263
29271
30277
31293
32307
33337
34347
35349
36353
37373
38383
39389
40397
41409
42443
43461
44479
45491
46509
47547
48569
49571
50577
51587
52593
53599
54619
55641

[5,19,23,29,31,41,43,47,53,59,73,79,83,89,97,107,
 113,127,167,179,191,211,223,227,229,233,241,263,
 271,277,293,307,337,347,349,353,373,383,389,397,
 409,443,461,479,491,509,547,569,571,577,587,593,
 599,619,641]