www.mikescher.com/www/statics/euler/Euler_Problem-014.php

<?php

return 
[
	'number'      => 14,
	'date'        => '2014-09-11',
	'title'       => 'Longest Collatz sequence',
	'abbreviated' => false,
	'steps'       => 3877209672,
	'time'        => 717713,
	'width'       => 51,
	'height'      => 5,
	'value'       => 837799,
];