A152589 - OEIS

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A152589

Primes of the form 15^(2^k) + 2.

1

17, 227, 50627, 6568408355712890627

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

PROG

(PARI) g(a, n) = if(a%2, b=2, b=1); for(x=0, n, y=a^(2^x)+b; if(ispseudoprime(y), print1(y, ", ")))

g(15, 4)

CROSSREFS

Cf. A057726, A152588.

Sequence in context: A164600 A187636 A152588 * A163853 A142547 A243229

Adjacent sequences: A152586 A152587 A152588 * A152590 A152591 A152592

KEYWORD

nonn

AUTHOR

Cino Hilliard, Dec 08 2008

STATUS

approved