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a(n) is the unique k such that palindrome A068065(n) = k + reverse(k).
0

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

%S 0,1,2,3,4,10,100,120,130,140,1000,10000,10100,10200,10300,10400,

%T 100000,1000000,1001000,1002000,1003000,1004000,10000000,100000000,

%U 100010000,100020000,100030000,100040000,1000000000,10000000000

%N a(n) is the unique k such that palindrome A068065(n) = k + reverse(k).

%e a(14) = 10300, since A068065(14) = 10601 = 10300 + 00301 and for no other k we have 10601 = k + reverse(k).

%Y Cf. A068065.

%K base,nonn

%O 0,3

%A _Klaus Brockhaus_, Mar 05 2002