%I #2 Mar 30 2012 17:40:40
%S 80,77394226,89158932,36623663376237623663376334,
%T 37633762366336633762366234,62366237633663366237633760,
%U 63376336623762376336623660,86194223018927804587702127
%N n times n+7 gives the concatenation of two numbers m and m-9.
%e 89158932 * 89158939 = 79493157//79493148, where // denotes
%e concatenation.
%Y Cf. A116099, A116229, A116231, A116238.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Feb 06 2006