%N a(n) is the number produced when n is converted to binary reflected Gray code, the binary digits are reversed and the code is converted back to decimal.
%C a(n) = A003188(n) iff A014550(n) is palindromic.
%H Indranil Ghosh, <a href="/A280995/b280995.txt">Table of n, a(n) for n = 0..50000</a>
%e For n = 8, the binary reflected Gray code representation of n is '1100' which when reversed becomes '0011'; and 11_2 = 3_10. So, a(8) = 3.
%o def a(n):
%o ....return int(bin(n^(n/2))[2:][::-1],2)
%Y Cf. A003188, A014550, A030101.
%A _Indranil Ghosh_, Jan 19 2017