use strict;
use Data::Dumper;

sub Recurse
{
	my $n = shift || 0;

	if ($n <= 0)
	{
		return {};
	}
	else
	{
		my $val = [ map { $n ** $_ } (1 .. 5) ];
		
		return { $n => $val, %{Recurse(--$n)} };
	}
}

my $powers = Recurse(5);

print Dumper($powers);
##</code><code>##

$VAR1 = {
          '1' => [
                   '1',
                   '1',
                   '1',
                   '1',
                   '1'
                 ],
          '2' => [
                   '2',
                   '4',
                   '8',
                   '16',
                   '32'
                 ],
          '3' => [
                   '3',
                   '9',
                   '27',
                   '81',
                   '243'
                 ],
          '4' => [
                   '4',
                   '16',
                   '64',
                   '256',
                   '1024'
                 ],
          '5' => [
                   '5',
                   '25',
                   '125',
                   '625',
                   '3125'
                 ]
        };