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A051822 Number of numbers below 10^n with nonzero multiplicative digital root 2. 2

%I

%S 1,16,224,2613,27458,271155,2620040,25457267,251964768,2537869322,

%T 25777827199,261509437991,2634407279895,26321038031960,

%U 261379965909359,2589357329707966

%N Number of numbers below 10^n with nonzero multiplicative digital root 2.

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

%F # { i : 10^(n-1) < i < 10^n and A051802(i)=2 }

%Y Cf. A051802, A051804, A051813.

%K nonn,base,hard

%O 1,2

%A _Dan Hoey_, Dec 09 1999

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Last modified June 5 09:20 EDT 2020. Contains 334829 sequences. (Running on oeis4.)