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A028319 as a simple table

na(n)
01
15
27
319
49
527
665
711
8101
957
10147
11231
1213
1369
14273
1515
16355
17855
18111
19451
202277
2117
22127
231661
243487
255379
26689
272223
2811583
29833
307371
3120449
32181
33995
343745
3510283
3621385
3734463
3843615
3921
40201
411377
4223
431599
447293
45267
461843
4731977
4825

[1,5,7,19,9,27,65,11,101,57,147,231,13,69,273,15,
 355,855,111,451,2277,17,127,1661,3487,5379,689,
 2223,11583,833,7371,20449,181,995,3745,10283,
 21385,34463,43615,21,201,1377,23,1599,7293,267,
 1843,31977,25]