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 A051826 #4 Jun 11 2014 17:24:23
%S A051826 1,15,213,2337,23231,231651,2349105,23926057,242539688,2437578213,
%T A051826 24286001675,240505616138,2376317894981,23497985025226,
%U A051826 232875555403623,2312981893109766
%N A051826 Number of numbers below 10^n with nonzero multiplicative digital root 6.
%D A051826 William Mayne, sci.math, Jun 15 1991
%F A051826 # { i : 10^(n-1) < i < 10^n and A051802(i)=6 }
%Y A051826 Cf. A051802, A051808, A051817.
%K A051826 nonn,base,hard
%O A051826 1,2
%A A051826 _Dan Hoey_, Dec 09 1999