%I A133256
%S A133256 1,2,4,3,5,6,8,7,9,10,12,11,13,14,16,15,17,18,20,19,21,22,24,23,25,26,
%T A133256 28,27,29,30,32,31,33,34,36,35,37,38,40,39,41,42,44,43,45,46,48,47,49,
%U A133256 50,52,51,53,54,56,55,57,58,60,59,61,62,64,63,65,66,68,67,69,70,72,71
%N A133256 a(4n) = n+1, a(4n+1) = n+2, a(4n+2) = n+4, a(4n+3) = n+3.
%Y A133256 Sequence in context: A125963 A107896 A107897 this_sequence A095690 A094870 
               A075618
%Y A133256 Adjacent sequences: A133253 A133254 A133255 this_sequence A133257 A133258 
               A133259
%K A133256 nonn
%O A133256 0,2
%A A133256 Paul Curtz (bpcrtz(AT)free.fr), Oct 15 2007