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A059456 as a simple table

na(n)
12
23
313
417
519
629
731
837
941
1043
1153
1261
1367
1471
1573
1679
1789
1897
19101
20103
21109
22113
23127
24131
25137
26139
27149
28151
29157
30163
31173
32181
33191
34193
35197
36199
37211
38223
39229
40233
41239
42241
43251
44257
45269
46271
47277
48281
49283
50293
51307
52311
53313
54317
55331
56337

[2,3,13,17,19,29,31,37,41,43,53,61,67,71,73,79,89,
 97,101,103,109,113,127,131,137,139,149,151,157,
 163,173,181,191,193,197,199,211,223,229,233,239,
 241,251,257,269,271,277,281,283,293,307,311,313,
 317,331,337]