A130890 - OEIS

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A130890

Number of terms of A061681 having length = n in decimal representation.

%I #2 Mar 30 2012 18:50:58

%S 4,23,281,2825,28287,282890,2828964,28289682,282896825

%N Number of terms of A061681 having length = n in decimal representation.

%C A055642(a(n)) = n; a(n) / A130901(n) --> 1.

%e a(1)=#{1,2,4,8}=4;

%e a(2)=#{16,17,18,19,20,22,24,26,28,30,33,36,39,42,46,50,55,60,66,72,79,86,94}=23.

%K nonn,base,more

%O 1,1

%A _Reinhard Zumkeller_, Jun 08 2007