A243035 - OEIS

%I #12 Jun 19 2014 23:52:06

%S 10,9,90,9,90,90,900,9,90,90,900,90,900,900,9000,9,90,90,900,90,900,

%T 900,9000,90,900,900,9000,900,9000,9000,90000,9,90,90,900,90,900,900,

%U 9000,90,900,900,9000,900,9000,9000,90000,90,900,900,9000,900,9000,9000

%N Number of entries of length n in A240601.

%C For n>0, a(2^n) = 9.

%C For any base b, a(1) = b, a(2) = b-1, a(3) = b*(b-1), for m>1, a(2m) = a(m), a(2m+1) = b*a(m).

%C For any base b, a(n) = (b-1)*b^(A000120(n)-1).

%F a(1) = 10, a(2) = 9, a(3) = 90, For m>1, a(2m) = a(m), a(2m+1) = 10*a(m).

%F a(n) = 9*10^(A000120(n)-1).

%Y Cf. A240601, A243036, A000120.

%K nonn,base

%O 1,1

%A _Lior Manor_, May 29 2014