1,1

Table of n, a(n) for n=1..9.

(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", ") ) ) }

(MAGMA) for k in [0..100] do p:=2^k+15; q:=2^(k+1)+15; if IsPrime(p) and IsPrime(q) then q; end if; end for;

Cf. A108266.

Sequence in context: A007639 A261311 A168144 * A245585 A060269 A245382

Adjacent sequences: A108268 A108269 A108270 * A108272 A108273 A108274

nonn

Cino Hilliard, Jun 29 2005

approved