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 A173482 #2 Mar 30 2012 19:00:22 %S A173482 10,100,3000,10000,100000,3000000,70000000,100000000,9000000000, %T A173482 10000000000,0,3000000000000,0,700000000000000,3000000000000000 %N A173482 a(n) = the smallest (n+1)-digit number ending in n zeros that is divisible by n, else 0. %C A173482 See A173478 - A173486. %K A173482 nonn,base %O A173482 1,1 %A A173482 _Jaroslav Krizek_, Feb 19 2010