www.mikescher.com/www/statics/euler/Euler_Problem-024.php

<?php

return 
[
	'number'      => 24,
	'date'        => '2014-09-16',
	'title'       => 'Lexicographic permutations',
	'abbreviated' => false,
	'steps'       => 3499,
	'time'        => 31,
	'width'       => 61,
	'height'      => 8,
	'value'       => 2783915460,
];