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%I #5 Mar 30 2012 18:56:44
%S 78,178,278,378,478,578,678,778,780,878,978,1078,1178,1278,1378,1478,
%T 1578,1678,1778,1780,1878,1978,2078,2178,2278,2378,2478,2578,2678,
%U 2778,2780,2878,2978,3078,3178,3278,3378,3478,3578
%N Numbers n such that string 7,8 occurs in the base 10 representation of n but not of n-1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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