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A337221 as a simple table

na(n)
12
23
37
431
52111
689599
744102911
835014031359
942884741301247
104322284854745087
11571673085017796607
122374135870748049407

[2,3,7,31,2111,89599,44102911,35014031359,
 42884741301247,4322284854745087,
 571673085017796607,2374135870748049407]