%I #2 Mar 30 2012 17:40:40
%S 4415,5577,7840,3188375836088211088457055570,
%T 4940200653606459263639537322,5059799346393540736360462670,
%U 6811624163911788911542944422,6977607565571622928141284588
%N n times n+9 gives the concatenation of two numbers m and m+7.
%e 7840 * 7849 = 6153//6160, where // denotes concatenation.
%Y Cf. A116211, A116334, A116341, A116347.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Feb 06 2006