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Internal digits of n^2 include digits of n as substring.
1

%I #5 Mar 30 2012 18:35:36

%S 50,60,250,500,600,760,2500,3760,3792,5000,6000,6250,7600,14651,25000,

%T 37600,50000,60000,62500,76000,93760,250000,376000,495475,500000,

%U 505025,600000,625000,760000,906250,937600,971582,1093760,1713526

%N Internal digits of n^2 include digits of n as substring.

%K nonn,base

%O 1,1

%A _David W. Wilson_