%I A030142
%S A030142 1,3,5,7,9,21,23,25,27,29,41,43,45,47,49,61,63,65,67,69,81,83,85,87,
%T A030142 89,101,103,105,107,109,121,123,125,127,129,141,143,145,147,149,161,
%U A030142 163,165,167,169,181,183,185,187,189,301,303,305,307,309,321,323
%N A030142 Odd numbers in which parity of digits alternates.
%Y A030142 Sequence in context: A083107 A003052 A003219 this_sequence A076185 A101813 
               A134719
%Y A030142 Adjacent sequences: A030139 A030140 A030141 this_sequence A030143 A030144 
               A030145
%K A030142 nonn,base
%O A030142 0,2
%A A030142 Patrick De Geest (pdg(AT)worldofnumbers.com)