剰余算を使わないSassでのFizzBuzz

fizzbuzz_not_remainder.scss

@mixin fizzbuzz_not_remainder($n: 100) {
    $fb: '', '', Fizz, '', Buzz, Fizz, '', '', Fizz, Buzz, '', Fizz, '', '', FizzBuzz;
    $cont: '';
    @for $i from 1 through $n {
        $tmp: $i;
        @while $tmp > 15 {
            $tmp: $tmp - 15;
        }
        @if nth($fb, $tmp) == '' {
            $cont: $cont + $i + ' ';
        } @else {
            $cont: $cont + nth($fb, $tmp) + ' ';
        }
        $i: $i + 1;
    }
    &:after { content: $cont; } 
}