%I #2 Mar 30 2012 17:40:40

%S 83,76980,714687,952311,90438188,96320541,32980078899026,

%T 34346653774235,42816188292270,42881990066485,57118009933509,

%U 57183811707724,65653346225759,67019921100968,81321742742207

%N n times n+7 gives the concatenation of two numbers m and m-4.

%e 96320541 * 96320548 = 92776472//92776468, where // denotes

%e concatenation.

%Y Cf. A116132, A116250, A116262, A116264, A116269.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006