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A033871 as a simple table

na(n)
13
27
311
419
539
663
791
899
9143
10147
11171
12183
13231
14247
15363
16399
17427
18507
19539
20627
21671
22819
23847
24931
251083
261159
271183
281287
291463
301859
311911
322223
332299
342379
352527
363003
373211
383843
393971
404719
414851
425187
435551
446039

[3,7,11,19,39,63,91,99,143,147,171,183,231,247,
 363,399,427,507,539,627,671,819,847,931,1083,1159,
 1183,1287,1463,1859,1911,2223,2299,2379,2527,3003,
 3211,3843,3971,4719,4851,5187,5551,6039]