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%I #4 Dec 05 2013 19:57:00
%S 1,2,3,456,78910,1112,13141516171819202122,232425262728,
%T 29303132333435,3637383940,
%U 4142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106
%N Concatenation of the terms gives natural numbers in sequence such that N-th partial concatenation is a multiple of n.
%C Not all the later terms are so big: a(14) = 114 and a(24) = 272, for example. - _Joshua Zucker_, May 04 2006
%e 123456 is a multiple of 4.
%Y Cf. A109856.
%K base,nonn
%O 0,2
%A _Amarnath Murthy_, Jul 08 2005
%E Corrected and extended by _Joshua Zucker_, May 04 2006
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