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A047948 as a simple table

na(n)
147
2151
3167
4251
5257
6367
7557
8587
9601
10647
11727
12941
13971
141097
151117
161181
171217
181361
191741
201747
211901
222281
232411
242671
252897
262957
273301
283307
293631
303727
314007
324451
334591
344651
354987
365101
375107
385297
395381
405387
415557
425801
436067
446257
456311

[47,151,167,251,257,367,557,587,601,647,727,941,
 971,1097,1117,1181,1217,1361,1741,1747,1901,2281,
 2411,2671,2897,2957,3301,3307,3631,3727,4007,4451,
 4591,4651,4987,5101,5107,5297,5381,5387,5557,5801,
 6067,6257,6311]