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 A159827 #2 Mar 30 2012 17:26:29 %S A159827 1,0,0,0,0,12,288,4032,47904,398736,2668464 %N A159827 a(n) = number of n-digit terms in A023086. %C A159827 1. There are no terms in A023086 with number of digits in the range 2..5: a(2..5)=0, then a(6)=12, a(7)=288 etc. %C A159827 2. Minimal and maximal n-digit terms (n>=6) in A023086 are (10^(n-1)+25874) and (5*10^(n-1)-71429). %Y A159827 A023086 n and 2*n are anagrams. A159816 Seven-digit terms in A023086. %K A159827 base,nonn %O A159827 1,6 %A A159827 _Zak Seidov_, Apr 22 2009