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A087195 as a simple table

na(n)
17
213
325
431
537
649
757
897
9109
10133
11151
12183
13193
14307
15325
16381
17385
18393
19553
20751
21769
22871
23973
24993
251407
261453
271537
281723
291893
302257
312367
322745
332863
342917
353073
363541
373751
383783
394557
405113
415203
425403
436145
446321
456973
467221

[7,13,25,31,37,49,57,97,109,133,151,183,193,307,
 325,381,385,393,553,751,769,871,973,993,1407,1453,
 1537,1723,1893,2257,2367,2745,2863,2917,3073,3541,
 3751,3783,4557,5113,5203,5403,6145,6321,6973,7221]