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Composites with consecutive (ascending) digits.
3

%I #4 Aug 13 2012 11:21:54

%S 4,6,8,9,12,34,45,56,78,90,123,234,345,456,567,678,789,890,901,1234,

%T 2345,3456,5678,6789,7890,8901,9012,12345,23456,34567,45678,56789,

%U 67890,89012,90123

%N Composites with consecutive (ascending) digits.

%H R. J. Mathar, <a href="/A161760/b161760.txt">Table of n, a(n) for n = 1..200</a>

%Y A059043 - A006055 - 1

%K nonn,base

%O 1,1

%A _Claudio Meller_, Jun 18 2009