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Number of numbers below 10^n with nonzero multiplicative digital root 8.
1

%I #4 Jun 11 2014 17:24:23

%S 1,24,252,2788,31923,352105,3700992,37619035,375300388,3721757919,

%T 37050089673,372206961122,3774238125518,38503409891419,

%U 393429821383490,4011462863576801

%N Number of numbers below 10^n with nonzero multiplicative digital root 8.

%D William Mayne, sci.math, Jun 15 1991

%F # { i : 10^(n-1) < i < 10^n and A051802(i)=8 }

%Y Cf. A051802, A051810, A051819.

%K nonn,base,hard

%O 1,2

%A _Dan Hoey_, Dec 09 1999