%I A068780
%S A068780 8,9,14,15,20,21,24,25,26,27,32,33,34,35,38,39,44,45,48,49,50,51,54,55,
%T A068780 56,57,62,63,64,65,68,69,74,75,76,77,80,81,84,85,86,87,90,91,92,93,94,
%U A068780 95,98,99,104,105,110,111,114,115,116,117,118,119,120,121,122,123,124
%N A068780 Lesser of twin composite numbers.
%t A068780 Select[ Range[2, 200], !PrimeQ[ # ] && !PrimeQ[ # + 1] &]
%Y A068780 Cf. A001359.
%Y A068780 Equals A005381 - 1.
%Y A068780 Sequence in context: A076769 A105741 A083134 this_sequence A096784 A059869 
               A105833
%Y A068780 Adjacent sequences: A068777 A068778 A068779 this_sequence A068781 A068782 
               A068783
%K A068780 nonn
%O A068780 1,1
%A A068780 Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 04 2002