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Palindromes n for which there is a unique k such that n = k + reverse(k).
2

%I #3 Mar 30 2012 17:27:34

%S 0,2,4,6,8,11,101,141,161,181,1001,10001,10201,10401,10601,10801,

%T 100001,1000001,1002001,1004001,1006001,1008001,10000001,100000001,

%U 100020001,100040001,100060001,100080001,1000000001,10000000001

%N Palindromes n for which there is a unique k such that n = k + reverse(k).

%C Subsequence of A068062; A068062(k) is in this sequence if and only if A068064(k) = 1. At first sight, 121 seems to be missing, but in fact 121 does not belong here (cf. example in A068064).

%e 10601 is in the sequence, since 10601 = 10300 + 00301 and for no other k we have 10601 = k + reverse(k).

%Y Cf. A002113, A067030, A067032, A068062, A068064.

%K base,nonn

%O 1,2

%A _Klaus Brockhaus_, Feb 16 2002