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A242380 as a simple table

na(n)
13
27
361
479
5139
6223
7317
8439
9619
101087
111669
121723
132593
143593
154093
165179
176079
188461
1912541
2013687
2116633
2217573
2319037
2419597
2521943
2625261
2727211
2828219
2929581
3036857
3138011
3239199
3345361
3446649
3547521
3651977
3756167
3874527
3987013
4088801
4191807
4292413
4395479

[3,7,61,79,139,223,317,439,619,1087,1669,1723,
 2593,3593,4093,5179,6079,8461,12541,13687,16633,
 17573,19037,19597,21943,25261,27211,28219,29581,
 36857,38011,39199,45361,46649,47521,51977,56167,
 74527,87013,88801,91807,92413,95479]