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n times n+2 gives the concatenation of two numbers m and m-6.
5

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

%S 45,54,949950,979653,7771781678,7900890079,9920892099,9949999500,

%T 38773083432316,41534158410841,47433813119407,52566186880592,

%U 58465841589158,61226916567683,72258945037434,86156896546724

%N n times n+2 gives the concatenation of two numbers m and m-6.

%Y Cf. A116116, A116233, A116246, A116248, A116252.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006