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A221055 as a simple table

na(n)
12
23
337
4167
5457
6971
72927
86547
912343
1016217
1126237
12105997
13121487
14246907
15273821
16400997
17562477
18657361
19708563
20939931
211072447
221216867
231293701
241456937
252027797
262135447
272604127
282997413
294410551
305564323
316209897
326435691
337647061
348442107

[2,3,37,167,457,971,2927,6547,12343,16217,26237,
 105997,121487,246907,273821,400997,562477,657361,
 708563,939931,1072447,1216867,1293701,1456937,
 2027797,2135447,2604127,2997413,4410551,5564323,
 6209897,6435691,7647061,8442107]