

A122721


Numbers n such that abs(7^n  2^11) is prime.


0



2, 4, 5, 6, 9, 21, 41, 52, 58, 118, 130, 585, 614, 744, 881, 941, 966, 1280, 1658, 4985
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OFFSET

1,1


LINKS



EXAMPLE

For x = 2 abs(7^22^11) = 1999 which is prime. So 2 is the first entry.


PROG

(PARI) g(n) = for(x=1, n, y=abs(7^x2^11); if(ispseudoprime(y), print1(x", ")))


CROSSREFS



KEYWORD

easy,nonn


AUTHOR



STATUS

approved



