| public dataProviderForFactorialPermutations ( ) |
public function dataProviderForFactorialPermutations()
{
return [[1, 1], [2, 2], [3, 6], [4, 24], [5, 120], [6, 720], [7, 5040], [8, 40320], [9, 362880], [10, 3628800], [11, 39916800], [12, 479001600], [13, 6227020800], [14, 87178291200], [15, 1307674368000], [16, 20922789888000], [17, 355687428096000], [18, 6402373705728000], [19, 121645100408832000], [20, 2432902008176640000]];
}