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%I #11 Sep 15 2019 04:06:22
%S 9,12,16,32,290
%N Numbers n such that 41#*2^n-1 and 41#*2^n+1 are twin primes, where # denotes the primorial, A002110.
%C 41# = 304250263527210.
%t Select[Range[0, 300], PrimeQ[304250263527210*2^# - 1] && PrimeQ[304250263527210*2^# + 1] &]
%Y Cf. A176061.
%K nonn,more
%O 1,1
%A _Pierre CAMI_, Dec 06 2010
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