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a(n) = palindrome arising when A230891(n+1) is formed (if there is more than one, use the smallest).
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%I #12 Dec 29 2018 15:49:01

%S 101,111,101,10001,101101,1010101,1001001,101101,1010101,10011001,

%T 10011001,10111101,100111001,100101001,10111101,10111101,100111001,

%U 1000110001,1000110001,1001111001,1001111001,1001111001,1011111101,1011111101,10001110001,10001010001

%N a(n) = palindrome arising when A230891(n+1) is formed (if there is more than one, use the smallest).

%C Let A230891(n) = X, A230891(n+1) = Y. The binary digits of X and Y can be rearranged to form a base-2 palindrome, possibly in several ways; a(n) is the smallest such palindrome.

%H Rémy Sigrist, <a href="/A303573/b303573.txt">Table of n, a(n) for n = 0..29999</a>

%H Rémy Sigrist, <a href="/A303573/a303573.gp.txt">PARI program for A303573</a>

%o (PARI) See Links section.

%Y Cf. A230891.

%K nonn,base

%O 0,1

%A _N. J. A. Sloane_, Apr 27 2018

%E More terms from _Rémy Sigrist_, Dec 27 2018