www.mikescher.com/www/statics/euler/Euler_Problem-068.php

<?php

return 
[
	'number'      => 68,
	'date'        => '2015-07-16',
	'title'       => 'Magic 5-gon ring',
	'abbreviated' => false,
	'steps'       => 304112,
	'time'        => 78,
	'width'       => 39,
	'height'      => 25,
	'value'       => 6531031914842725,
];