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A240102 as a simple table

na(n)
15
27
323
429
531
637
747
853
961
1071
11101
12103
13109
14127
15149
16151
17157
18167
19173
20181
21191
22197
23223
24239
25263
26269
27271
28277
29293
30317
31349
32359
33367
34383
35389
36397
37421
38461
39479
40503
41509
42529
43541
44557
45607
46613
47647
48653
49661
50677
51701
52719
53733

[5,7,23,29,31,37,47,53,61,71,101,103,109,127,149,
 151,157,167,173,181,191,197,223,239,263,269,271,
 277,293,317,349,359,367,383,389,397,421,461,479,
 503,509,529,541,557,607,613,647,653,661,677,701,
 719,733]