MathPHP\Sequence\AdvancedTest::dataProviderForTriangularNumber PHP Метод

    public function dataProviderForTriangularNumber()
    {
        return [[-1, []], [0, []], [1, [1 => 1]], [2, [1 => 1, 3]], [3, [1 => 1, 3, 6]], [4, [1 => 1, 3, 6, 10]], [5, [1 => 1, 3, 6, 10, 15]], [6, [1 => 1, 3, 6, 10, 15, 21]], [28, [1 => 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406]]];
    }