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A145474 as a simple table

na(n)
113
261
373
4109
5181
6193
7241
8313
9349
10373
11409
12433
13541
14601
15613
16661
17733
18829
19853
201033
211069
221129
231201
241213
251249
261453
271489
281609
291693
301741
311753
321801
331861
342029
352053
362089
372113
382161
392221
402293
412389
422593
432749
442833
452953
463049

[13,61,73,109,181,193,241,313,349,373,409,433,541,
 601,613,661,733,829,853,1033,1069,1129,1201,1213,
 1249,1453,1489,1609,1693,1741,1753,1801,1861,2029,
 2053,2089,2113,2161,2221,2293,2389,2593,2749,2833,
 2953,3049]