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n times n+8 gives the concatenation of two numbers m and m-5.
6

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

%S 7,8217106,8030443878983905980,

%T 43467818511541680701794365325328847002050,

%U 56532181488458319298205634674671152997943

%N n times n+8 gives the concatenation of two numbers m and m-5.

%e 8217106 * 8217114 = 6752089//6752084, where // denotes

%e concatenation.

%Y Cf. A116126, A116244, A116256, A116258, A116270.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006