%I #5 Sep 24 2013 09:21:37
%S 1,2,3,4,2175
%N Numbers n such that 2*6^n-1 and 2*6^n+1 are twin primes.
%C No more terms through 10^4. - _Ryan Propper_, Dec 31 2007
%Y Cf. A057472 A120023.
%K more,nonn
%O 1,2
%A _Pierre CAMI_, Jun 04 2006