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A326740 as a simple table

na(n)
17
271
375
4107
5117
6127
7137
8147
9157
10167
11177
12187
13197
14207
15307
16407
17507
18523
19543
20607
21707
22711
23723
24747
25751
26807
27907
281071
291075
301171
311175
321271
331275
341371
351375
361471
371475
381571
391575
401671
411675
421771
431775
441871
451875
461971
471975
482071

[7,71,75,107,117,127,137,147,157,167,177,187,197,
 207,307,407,507,523,543,607,707,711,723,747,751,
 807,907,1071,1075,1171,1175,1271,1275,1371,1375,
 1471,1475,1571,1575,1671,1675,1771,1775,1871,1875,
 1971,1975,2071]