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%I #3 Mar 30 2012 18:52:39
%S 1,4,8,10,12,14,16,18,20,22,24,26,27,33,34,35,39,40,42,44,45,48,49,50,
%T 52,55,56,57,63,64,65,66,68,70,74,76,78,81,82,84,86,87,91,95,98,100,
%U 105,106,111,112,115,116,117,119,121,125,126,128,129,132,134,136,138,140
%N Nonprimes n such that exactly one of 2n-1 and 2n+1 is prime.
%K nonn,easy,less
%O 1,2
%A _Juri-Stepan Gerasimov_, Feb 03 2010
%E Edited by _Charles R Greathouse IV_, Mar 25 2010
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