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n times n+8 gives the concatenation of two numbers m and m-3.
5

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

%S 62,45211539,54788454,78317866,72388446037855609175404256,

%T 73247326752475247326752671,75267524732673267524732471,

%U 76126405447292905676080886,42053270820132695893502981749302

%N n times n+8 gives the concatenation of two numbers m and m-3.

%e 78317866 * 78317874 = 61336887//61336884, where // denotes

%e concatenation.

%Y Cf. A116139, A116257, A116269, A116271, A116277.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006