%I A044446
%S A044446 4,20,36,52,68,84,100,116,132,148,164,180,196,212,228,244,340,356,372,
               388,
%T A044446 404,420,436,452,468,484,500,516,532,548,564,596,612,628,644,660,676,
%U A044446 692,708,724,740,756,772,788,804,820,852,868
%N A044446 Numbers n such that string 1,0 occurs in the base 4 representation of 
               n but not of n+1.
%Y A044446 Cf. A097357, A085805.
%Y A044446 Sequence in context: A030002 A085805 A119413 this_sequence A072977 A163365 
               A145194
%Y A044446 Adjacent sequences: A044443 A044444 A044445 this_sequence A044447 A044448 
               A044449
%K A044446 nonn,base
%O A044446 1,1
%A A044446 Clark Kimberling (ck6(AT)evansville.edu)