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n times n+7 gives the concatenation of two numbers m and m+4.
5

%I #3 Mar 30 2012 17:40:40

%S 77,4328,5666,9365,41505566065992219342,44035313091289689595,

%T 46429818586950933764,48959565612248404017,51040434387751595977,

%U 53570181413049066230,55964686908710310399,58494433934007780652

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

%e 9365 * 9372 = 8776//8780, where // denotes concatenation.

%Y Cf. A116133, A116311, A116318, A116320, A116326.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006