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A171904 Smallest number m such that m and m+n have both at least two identical neighboring digits in their decimal representations.

%I A171904 #10 Feb 01 2014 23:08:52
%S A171904 99,110,110,110,110,110,110,110,110,100,11,88,99,99,99,99,99,99,99,99,
%T A171904 112,11,77,88,88,88,88,88,88,88,88,112,11,66,77,77,77,77,77,77,77,77,
%U A171904 112,11,55,66,66,66,66,66,66,66,66,112,11,44,55,55,55,55,55,55,55,55
%N A171904 Smallest number m such that m and m+n have both at least two identical neighboring digits in their decimal representations.
%C A171904 a(n) + n = A171901(k) for some k.
%H A171904 R. Zumkeller, <a href="/A171904/b171904.txt">Table of n, a(n) for n = 1..10000</a>
%F A171904 A196368(a(n)) + A196368(a(n)+n) = 0. - _Reinhard Zumkeller_, Jan 31 2014
%o A171904 (Haskell)
%o A171904 a171904 n = head [m | m <- a171901_list, a196368 (m + n) == 0]
%o A171904 -- _Reinhard Zumkeller_, Jan 31 2014
%Y A171904 Cf. A196368, A171901, A171903.
%K A171904 base,nonn,look
%O A171904 1,1
%A A171904 _Reinhard Zumkeller_, Feb 07 2010