Find the Nth value of the Fibonacci Sequence in Sass. Exponent function by Scott Kellum (gist.github.com/scottkellum/1160816)

Fibonnacci.scss

@function exponent($base, $exponent) {
	$value: $base;
		
	@if ($exponent > 1) {
		@for $i from 2 through $exponent {
			$value: $value * $base;
	  	}
	}
		
	@if ($exponent < 1){
	 	@for $i from 0 through -$exponent{
	 		$value: $value / $base;
	 	}
	}
	
	@return ($value)
};


@function fibonacci($n) {
	$val: (exponent($_Phi, $n) - exponent(-$_phi, $n)) / ($_Phi - (-$_phi));
	@return $val;
};