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a(n)=(s(n)+4)/10, where s(n)=n-th base 10 palindrome that starts with 6.
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%I #5 Jul 12 2012 00:39:47

%S 1,7,61,62,63,64,65,66,67,68,69,70,601,612,623,634,645,656,667,678,

%T 689,700,6001,6011,6021,6031,6041,6051,6061,6071,6081,6091,6102,6112,

%U 6122,6132,6142,6152,6162,6172,6182,6192,6203,6213

%N a(n)=(s(n)+4)/10, where s(n)=n-th base 10 palindrome that starts with 6.

%K nonn,base

%O 1,2

%A _Clark Kimberling_