%I A108258
%S A108258 29,47,101,263,6581,177167
%N A108258 Consider primes p and q such that p = 3^k + 20 and q = 3^(k+1) + 20 for 
               some k; sequence gives values of q.
%C A108258 It appears that these values are merely conjectures. - N. J. A. Sloane 
               (njas(AT)research.att.com), Jun 30 2005
%e A108258 3^1 + 20 = 23, 3^2 + 20 = 29.
%o A108258 (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(z",") ) ) }
%Y A108258 Sequence in context: A119891 A106754 A063642 this_sequence A142728 A042947 
               A134555
%Y A108258 Adjacent sequences: A108255 A108256 A108257 this_sequence A108259 A108260 
               A108261
%K A108258 nonn
%O A108258 0,1
%A A108258 Cino Hilliard (hillcino368(AT)gmail.com), Jun 29 2005