title: How to fix this fibonacci batch lister?
body: <p>I've researched about <em>operand and operators</em>, <em>set /a</em> , and <em>setlocal EnableDelayedExpansion</em> from this website but still somehow my code ends up telling
  me that my operand is missing.</p>
  
  <pre><code>@echo off
  cls
  setlocal EnableDelayedExpansion
  color 0a
  title Fibonacci Lister
  :Fibonacci
  cls
  set /a n1=1
  echo %n1%
  set /a n2=1
  echo %n2%
  set /a j=3
  :loopfunction
  set /a n%j%=!n%j-1%!+!n%j-2%!
  echo !n%j%!
  set /a j=%j%+1
  goto :loopfunction
  </code></pre>
  
  <p>So I wanted to know what is the problem here. It is probably in line 14 where
  the code is complex and hard to understand easily.</p>