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A051541 as a simple table

na(n)
15
29
313
417
57
65
729
811
937
1041
111
127
1353
1419
1561
161
1723
1873
191
209
211
2289
2331
2497
25101
261
27109
28113
291
3011
315
3243
331
34137
3547
361
37149
381
39157
401
411
4213
43173
4459
45181
461
471
48193
49197
5067
511
521
5371
541
551
561
57229
58233
5979
60241
611
6283
631
64257
651
661
67269
681
69277

[5,9,13,17,7,5,29,11,37,41,1,7,53,19,61,1,23,73,1,
 9,1,89,31,97,101,1,109,113,1,11,5,43,1,137,47,1,
 149,1,157,1,1,13,173,59,181,1,1,193,197,67,1,1,71,
 1,1,1,229,233,79,241,1,83,1,257,1,1,269,1,277]