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A105461
The floor(exp(n))-th irregular prime.
2
37, 59, 149, 389, 809, 2543, 8089, 25301, 76493, 232439, 695407, 2040551, 5993249, 17532407, 50970511, 147468721, 424835869, 1219642051
OFFSET
1,1
FORMULA
a(n) = A000928(A000149(n)). - Amiram Eldar, Mar 05 2019
MATHEMATICA
ip={ the list of irregular primes to 12 million }; Table[ ip[[ Floor[E^n]]], {n, 0, 12}]
CROSSREFS
KEYWORD
hard,nonn,more
AUTHOR
Robert G. Wilson v, Apr 07 2005
EXTENSIONS
a(13) corrected and a(14)-a(18) added by Amiram Eldar, Mar 05 2019
STATUS
approved