%I A133259
%S A133259 1,2,3,6,5,4,7,8,9,12,11,10,13,14,15,18,17,16,19,20,21,24,23,22,25,26,
%T A133259 27,30,29,28,31,32,33,36,35,34,37,38,39,42,41,40,43,44,45,48,47,46,49,
%U A133259 50,51,54,53,52,55,56,57,60,59,58,61,62,63,66,65,64,67,68,69,72,71,70
%N A133259 a(6n) = 6n+1, a(6n+1) = 6n+2, a(6n+2) = 6n+3, a(6n+3) = 6n+6, a(6n+4) 
               = 6n+5, a(6n+5) = 6n+4.
%Y A133259 Sequence in context: A072298 A130686 A056023 this_sequence A120067 A089843 
               A131145
%Y A133259 Adjacent sequences: A133256 A133257 A133258 this_sequence A133260 A133261 
               A133262
%K A133259 nonn
%O A133259 0,2
%A A133259 Paul Curtz (bpcrtz(AT)free.fr), Oct 15 2007