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A118571 as a simple table

na(n)
12
23
35
411
523
629
741
883
989
10113
11131
12173
13179
14191
15281
16359
17443
18593
19641
20683
21719
22809
23911
24953
251013
261019
271031
281103
291439
301451
311499
321583
331811
341901
352003
362063
372069
382339
392351
402393
412399
422753
432939
443299
453329
463389
473413
483491
493761

[2,3,5,11,23,29,41,83,89,113,131,173,179,191,281,
 359,443,593,641,683,719,809,911,953,1013,1019,
 1031,1103,1439,1451,1499,1583,1811,1901,2003,2063,
 2069,2339,2351,2393,2399,2753,2939,3299,3329,3389,
 3413,3491,3761]