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 A051822 #4 Jun 11 2014 17:24:23
%S A051822 1,16,224,2613,27458,271155,2620040,25457267,251964768,2537869322,
%T A051822 25777827199,261509437991,2634407279895,26321038031960,
%U A051822 261379965909359,2589357329707966
%N A051822 Number of numbers below 10^n with nonzero multiplicative digital root 2.
%D A051822 William Mayne, sci.math, Jun 15 1991
%F A051822 # { i : 10^(n-1) < i < 10^n and A051802(i)=2 }
%Y A051822 Cf. A051802, A051804, A051813.
%K A051822 nonn,base,hard
%O A051822 1,2
%A A051822 _Dan Hoey_, Dec 09 1999