A051819 - OEIS

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A051819

Number of n-digit numbers with nonzero multiplicative digital root 8.

%I #4 Jun 11 2014 17:24:22

%S 1,23,228,2536,29135,320182,3348887,33918043,337681353,3346457531,

%T 33328331754,335156871449,3402031164396,34729171765901,

%U 354926411492071,3618033042193311

%N Number of n-digit numbers 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, A051828.

%K nonn,base,hard

%O 1,2

%A _Dan Hoey_, Dec 09 1999