This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A243035 #12 Jun 19 2014 23:52:06 %S A243035 10,9,90,9,90,90,900,9,90,90,900,90,900,900,9000,9,90,90,900,90,900, %T A243035 900,9000,90,900,900,9000,900,9000,9000,90000,9,90,90,900,90,900,900, %U A243035 9000,90,900,900,9000,900,9000,9000,90000,90,900,900,9000,900,9000,9000 %N A243035 Number of entries of length n in A240601. %C A243035 For n>0, a(2^n) = 9. %C A243035 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 A243035 For any base b, a(n) = (b-1)*b^(A000120(n)-1). %F A243035 a(1) = 10, a(2) = 9, a(3) = 90, For m>1, a(2m) = a(m), a(2m+1) = 10*a(m). %F A243035 a(n) = 9*10^(A000120(n)-1). %Y A243035 Cf. A240601, A243036, A000120. %K A243035 nonn,base %O A243035 1,1 %A A243035 _Lior Manor_, May 29 2014