Warum passt die Wertetabelle nicht
[1, 15.70796326;
2, 62.83185307;
3, 141.3716694;
4, 251.3274122;
5, 392.6990816;
6, 565.4866776;
7, 769.6902001;
8, 1005.309649;
9, 1272.345024;
10, 1570.796326;
11, 1900.663555;
12, 2261.946710;
13, 2654.645792;
14, 3078.760800]