#!/bin/bash
if [ $# -lt 1 ]; then
  echo Error: not enough arguments!
else
  declare -a fib
  fib[0]=0
  fib[1]=1
  for (( i=2; i<=$1; i++ )); do
    fib[$i]=$(( ${fib[$(( $i-1 ))]} + ${fib[$(( $i-2 ))]} ))
  done
  echo ${fib[*]}
fi