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A249782 as a simple table

na(n)
12
27
33
437
511
683
7107
8139
943
10211
11193
12881
13751
142777
152633
165981
176563
1810531
193407
209871
2112421
2223873
236449
24164789
253547
2639877
27248909
28370081
29528883
301144453
31574813
321201153
331428929
342225053
351397719

[2,7,3,37,11,83,107,139,43,211,193,881,751,2777,
 2633,5981,6563,10531,3407,9871,12421,23873,6449,
 164789,3547,39877,248909,370081,528883,1144453,
 574813,1201153,1428929,2225053,1397719]