%I A068121
%S A068121 1,121,12326391,1234134359056,1234543668832,
%T A068121 1234566439851412003312246012968681,
%U A068121 123456718029050407240974433459138845096817901
%N A068121 Smallest n-th power beginning with the concatenation of first n natural 
               numbers.
%e A068121 12326391=231^3 is the smallest cube beginning with 123.
%Y A068121 Cf. A077736.
%Y A068121 Sequence in context: A053885 A068490 A077735 this_sequence A013859 A060032 
               A109643
%Y A068121 Adjacent sequences: A068118 A068119 A068120 this_sequence A068122 A068123 
               A068124
%K A068121 base,nonn
%O A068121 1,2
%A A068121 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 21 2002
%E A068121 More terms from Robert Gerbicz (gerbicz(AT)freemail.hu), Sep 05 2002
%E A068121 Edited by N. J. A. Sloane (njas(AT)research.att.com) at the suggestion 
               of Andrew Plewe, Jun 15 2007