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 A173484 #8 Jun 28 2018 04:49:54 %S A173484 100,1000,30000,100000,1000000,30000000,700000000,1000000000, %T A173484 90000000000,100000000000,11000000000000,30000000000000, %U A173484 1300000000000000,7000000000000000,30000000000000000 %N A173484 a(n) = the smallest number ending in n+1 zeros divisible by n. %C A173484 See A173478 - A173486. %H A173484 Robert Israel, <a href="/A173484/b173484.txt">Table of n, a(n) for n = 1..995</a> %F A173484 a(n) = 10^(n+1)*A132740(n). - _Robert Israel_, Jun 28 2018 %p A173484 f:= n -> 10^(n+1)*n/2^padic:-ordp(n,2)/5^padic:-ordp(n,5): %p A173484 map(f, [$1..30]); # _Robert Israel_, Jun 28 2018 %Y A173484 Cf. A132740. %K A173484 nonn,base %O A173484 1,1 %A A173484 _Jaroslav Krizek_, Mar 04 2010