%I A161501
%S A161501 1,5,3,9,5,27,7,17,9,21,45,51,27,119,15,33,17,73,153,165,21,45,93,99,51,
%T A161501 107,27,231,119,495,31,65,33,273,561,73,297,153,313,325,165,85,693,717,
%U A161501 45,93,189,195,99,403,51,843,107,219,443,455,231,471,119,975,495,2015
%N A161501 a(n) = the smallest positive integer that is a palindrome when represented 
               in binary, and is made by appending some number (zero or more) of 
               binary digits on the right of n's binary representation.
%e A161501 11 (decimal) in binary is 1011. Appending 01 to the right side of 1011 
               forms the binary palindrome 101101, which is 45 in decimal. Since 
               two binary digits is the smallest number of digits that need to be 
               appended to form a palindrome, then a(11) = 45. (Note that 45 is 
               not the smallest positive number that when represented in binary 
               is a palindrome and contains 1011 as a substring. That would instead 
               be 11011 {binary} = 27 {decimal}.)
%Y A161501 A145800, A161502
%Y A161501 Sequence in context: A165789 A133090 A145800 this_sequence A118273 A073891 
               A086970
%Y A161501 Adjacent sequences: A161498 A161499 A161500 this_sequence A161502 A161503 
               A161504
%K A161501 base,nonn
%O A161501 1,2
%A A161501 Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Jun 11 2009
%E A161501 More terms from Sean A. Irvine (sairvin(AT)xtra.co.nz), Sep 27 2009