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A257378 as a simple table

na(n)
11
25
33
43
513
63
73
89
95
1013
119
123
133
145
159
167
173
183
193
205
213
227
2319
245
255
2633
273
287
297
309
315
3215
333
3421
3515
367
3735
3889
3925
4015
4125
4249
4353
4445
4513
4615
4721
4831
4927
503
519
5233
5337
5423
5541
5641
5719
589
59111
607
613
6289
6313
6439
6531
6617
6711
68101
6917
7037
717
7251
7375

[1,5,3,3,13,3,3,9,5,13,9,3,3,5,9,7,3,3,3,5,3,7,19,
 5,5,33,3,7,7,9,5,15,3,21,15,7,35,89,25,15,25,49,
 53,45,13,15,21,31,27,3,9,33,37,23,41,41,19,9,111,
 7,3,89,13,39,31,17,11,101,17,37,7,51,75]