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A261564 as a simple table

na(n)
12
23
37
443
513
653
75
86221671
938709183810571
1025621
1110300271
122731
131079927141307582051252331702244209088763871

[2,3,7,43,13,53,5,6221671,38709183810571,25621,
 10300271,2731,
 1079927141307582051252331702244209088763871]