%I A050420
%S A050420 2,4,6,8,10,11,13,14,16,18,19,22,23,25,29,30,32,34,35,36,37,41,42,43,
%T A050420 46,47,49,53,54,55,59,61,62,64,66,67,69,76,77,81,82,83,89,90,91,94,95,
%U A050420 97,101,102,103,109,111,115,123,125,126,128,130
%N A050420 Numbers for which in base 2 the least number of digits that can be removed 
               to leave a palindrome (possibly beginning with 0) is 1.
%e A050420 (18 base 2) = 10010 -> 1001.
%Y A050420 Sequence in context: A153170 A067030 A072427 this_sequence A096922 A055954 
               A161602
%Y A050420 Adjacent sequences: A050417 A050418 A050419 this_sequence A050421 A050422 
               A050423
%K A050420 nonn,base
%O A050420 1,1
%A A050420 Clark Kimberling (ck6(AT)evansville.edu)