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A070850 as a simple table

na(n)
17
213
319
473
531
637
743
897
9109
1061
1167
1273
1379
14337
15181
1697
17103
18109
19229
20241
21127
22397
23139
24433
25151
26157
27163
28337
29349
30181
31373
32193
33199
34409
35211
36433
37223
38229
39937
40241
41739
42757
431033
441321
45271
46277
47283
48577
49883
50601
51307
52313
533181
541297

[7,13,19,73,31,37,43,97,109,61,67,73,79,337,181,
 97,103,109,229,241,127,397,139,433,151,157,163,
 337,349,181,373,193,199,409,211,433,223,229,937,
 241,739,757,1033,1321,271,277,283,577,883,601,307,
 313,3181,1297]