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A055469 as a simple table

na(n)
12
27
311
429
537
667
779
8137
9191
10211
11277
12379
13631
14821
15947
16991
171129
181327
191597
201831
212017
222081
232347
242557
252851
262927
273571
283917
294561
304657
314951
325051
335779
346217
356329
368647
378779
389181
399871
4011027
4112721
4213367
4314029
4414197
4514879

[2,7,11,29,37,67,79,137,191,211,277,379,631,821,
 947,991,1129,1327,1597,1831,2017,2081,2347,2557,
 2851,2927,3571,3917,4561,4657,4951,5051,5779,6217,
 6329,8647,8779,9181,9871,11027,12721,13367,14029,
 14197,14879]