public void Generator_ForSequence3()
        {
            double[] expected = { 1, 2, 2.5, 3.3, 4.05757575757576, 4.87086926018965, 5.70389834408211, 6.55785277425587, 7.42763417076325, 8.31053343902137 };

            var gen  = new FunctionGenerator <double>(1, 2);
            var list = new List <double>();

            foreach (var t in gen.GenerateByThirdRule(10))
            {
                list.Add(t);
            }
            CollectionAssert.AreEqual(expected, list.ToArray());
        }