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A260555 as a simple table

na(n)
173
279
3103
4193
5199
6223
7271
8313
9439
10463
11751
12823
13991
141039
151063
161087
171303
181423
191543
201567
211663
221759
231783
241831
251873
261999
272143
282287
292383
302503
312833
323343
333463
343583
353631
363823
373847
383943
394447
404513
414639
424783
435023
445167
455407

[73,79,103,193,199,223,271,313,439,463,751,823,
 991,1039,1063,1087,1303,1423,1543,1567,1663,1759,
 1783,1831,1873,1999,2143,2287,2383,2503,2833,3343,
 3463,3583,3631,3823,3847,3943,4447,4513,4639,4783,
 5023,5167,5407]