alias fibonacci 
  $number = $1 
  if $number < 1 
    return -1 
  elseif ($number = 1) or ($number = 2) 
    return 1 
  else
    return [eval [fibonacci [eval $number - 1]] + [fibonacci [eval $number - 2]]] 
  end if
end alias
 
alias main 
  echo -a [fibonacci [input "Enter the number of sequences for fibonacci"]] 
end alias