%I A045121
%S A045121 95,119,125,215,221,245,287,311,317,335,367,371,379,380,382,415,439,
%T A045121 445,455,461,467,475,476,478,487,493,497,500,502,505,607,631,637,727,
%U A045121 733,757,791,797,821,839,845,851,859,860,862,871
%N A045121 Numbers n with property that in base 4 representation the numbers of 
               1's and 3's are 2 and 2, respectively.
%Y A045121 Sequence in context: A055467 A057654 A046005 this_sequence A057874 A112135 
               A074237
%Y A045121 Adjacent sequences: A045118 A045119 A045120 this_sequence A045122 A045123 
               A045124
%K A045121 nonn,base
%O A045121 1,1
%A A045121 Clark Kimberling (ck6(AT)evansville.edu)