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

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

%S 2,33,61,805,4779,5215,7407,48208887,51791107,77620652,4291816089,

%T 4482541431,5517458563,5708183905,9036996877,9737360644,

%U 3579205562000136225339579332,3939042613182345526485238180

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

%Y Cf. A116209, A116332, A116339, A116341, A116346.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006