Write it out on paper, with row and column 1 in the top left corner. Write your values out for each row and each column. It should become obvious what the formula for calculating each value at each row and column should be.
10 rows and 10 columns, each indexed from 0 to 9.
Column Indexes
0 1 2 3 4 5 6 7 8 9
---------+------------------------------
0 | 1 2 3 4 5 6 7 8 9 10
1 | 11 12 13 14 15 16 17 18 19 20
2 | 21 22 23 24 25 26 27 28 29 30
3 | 31 32 33 34 35 36 37 38 39 40
4 | 41 42 43 44 45 46 47 48 49 50
Row 5 | 51 52 53 54 55 56 57 58 59 60
Index 6 | 61 62 63 64 65 66 67 68 69 70
7 | 71 72 73 74 75 76 77 78 79 80
8 | 81 82 83 84 85 86 87 88 89 90
9 | 91 92 93 94 95 96 97 98 99100
Coming up with a simple algorithm to determine what the values are is part of the learning process and what you expected to do when writing code.