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A051824 Number of numbers below 10^n with nonzero multiplicative digital root 4. 1

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

%S 1,13,118,898,6350,46329,382410,3645765,38163792,410943130,4368127170,

%T 45097983418,451960864264,4431128837948,42987600398290,417247179973351

%N Number of numbers below 10^n with nonzero multiplicative digital root 4.

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

%F # { i : 10^(n-1) < i < 10^n and A051802(i)=4 }

%Y Cf. A051802, A051806, A051815.

%K nonn,base,hard

%O 1,2

%A _Dan Hoey_, Dec 09 1999

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Last modified July 21 00:10 EDT 2024. Contains 374461 sequences. (Running on oeis4.)