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URL: https://oeis.org/A105462

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A105462
The 3^n-th irregular prime.
2
37, 67, 233, 467, 1307, 4637, 15601, 54437, 184279, 616391, 2009011, 6568151, 21341821, 68826689, 220682383, 704456869
OFFSET
1,1
MATHEMATICA
ip={ the list of irregular primes to 12 million }; Table[ ip[[3^n]], {n, 0, 11}]
CROSSREFS
KEYWORD
hard,nonn
AUTHOR
Robert G. Wilson v, Apr 07 2005
EXTENSIONS
a(12) corrected and a(13)-a(17) added by Amiram Eldar, Mar 05 2019
STATUS
approved