

A249305


Primes p such that 2^p  p^2 is not squarefree.


0




OFFSET

1,1


COMMENTS

Sequence is infinite, containing all primes congruent to 2, 4, 89, or 115 mod 147.  Charles R Greathouse IV, Oct 28 2014


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FORMULA



EXAMPLE

2 is in this sequence because 2 is prime and 2^2  2^2 = 0 is not squarefree.


PROG

(Magma) [n: n in [3..269]  IsPrime(n) and not IsSquarefree(2^n  n^2)];


CROSSREFS



KEYWORD

nonn,more


AUTHOR



EXTENSIONS



STATUS

approved



