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n times n+6 gives the concatenation of a number m with itself.
5

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

%S 5,95,462,533,715,819,995,3425,6570,9995,90904,99995,980199,999995,

%T 3636358,6363637,9999995,41176465,58823530,99999995,413533835,

%U 426573427,428571423,432620006,567379989,571428572,573426568

%N n times n+6 gives the concatenation of a number m with itself.

%Y Cf. A116159, A116282, A116289, A116291, A116304.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006