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A108271 Consider primes p and q such that p = 2^k + 15 and q = 2^(k+1) + 15 for some k; sequence gives values of q. +0
1
19, 23, 31, 47, 79, 2063, 4111, 65551, 8388623 (list; graph; listen)
OFFSET

0,1

COMMENT

It appears that these values are merely conjectures. - njas, Jun 30 2005

PROGRAM

(PARI) g(m, n, b) = { for(x=0, n, y=m+b^x+b%2; z=m+b^(x+1)+b%2; if(isprime(y)&isprime(z), print1(y", ") ) ) }

CROSSREFS

Sequence in context: A104047 A019360 A007639 this_sequence A060269 A075585 A052030

Adjacent sequences: A108268 A108269 A108270 this_sequence A108272 A108273 A108274

KEYWORD

nonn

AUTHOR

Cino Hilliard (hillcino368(AT)gmail.com), Jun 29 2005

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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