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%I #4 Jun 03 2013 00:32:20
%S 10,10,12,12,10,12,21,32,45,910,1617,1716,65,56,45,32,34,54,76,1920,
%T 1617,1716,1817,1920,2425,78,54,56,87,1110,2728,1312,1617,3332,910,
%U 3132,1110,76,78,1920,1312,3738,2021,1716,4140,4140,2021,1920,98
%N Least multiple of n as a concatenation of two successive natural numbers k and k+1.
%C 'Multiple' means >1 and we allow either left-to-right or right-to-left concatenations.
%H Paul Tek, <a href="/A111381/b111381.txt">Table of n, a(n) for n = 1..10000</a>
%Y Cf. A113595.
%K base,nonn
%O 1,1
%A Hans Havermann, Nov 08 2005