You can't use a for loop to fill the series - not without an external data source of some kind. To do it with just a for loop and no external data source would be very, very clumsy, as you would need loads of "is this row one?" and "if so, is this column 2?" "If so, use the value 2" satatememts.
Do it the easy way:
int[][] data = new int[][] {new int[] { 1, 2, 3, 4, 5},
new int[] { 1, 4, 9, 16 , 25},
new int[] { 1, 3, 5 , 7 , 9},
new int[] { 9, 7, 5 , 3, 1}};