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A274343 as a simple table

na(n)
21
31
43
511
613
739
833
92431
10663
11247
122717
1380223
141989
151062347
163187041
1716055
186605027
1977571
2011685817
211062347
222002524095
234405553009
24247
252717
26497705
27155409680283
2811559397707
291123416017295
3074894401153
31114727509
325643476995
33409716429837
3410158258591
35909705199
36233400836858808047
37190964321066297493
3818394643943
3934825896536145
40229850917138557
4117096349208653
42357856262339147
4324291640943843637507
44602272089516784401
45174041631153

[1,1,3,11,13,39,33,2431,663,247,2717,80223,1989,
 1062347,3187041,16055,6605027,77571,11685817,
 1062347,2002524095,4405553009,247,2717,497705,
 155409680283,11559397707,1123416017295,
 74894401153,114727509,5643476995,409716429837,
 10158258591,909705199,233400836858808047,
 190964321066297493,18394643943,34825896536145,
 229850917138557,17096349208653,357856262339147,
 24291640943843637507,602272089516784401,
 174041631153]