>>> main.print_values(7, 7, main.c)
+---------+---+---+---+---+---+----+----+
| c(x, y) | 0 | 1 | 2 | 3 | 4 | 5  | 6  |
+---------+---+---+---+---+---+----+----+
| 0       | 1 | 1 | 1 | 1 | 1 | 1  | 1  |
| 1       | 0 | 1 | 2 | 3 | 4 | 5  | 6  |
| 2       | 0 | 0 | 1 | 3 | 6 | 10 | 15 |
| 3       | 0 | 0 | 0 | 1 | 4 | 10 | 20 |
| 4       | 0 | 0 | 0 | 0 | 1 | 5  | 15 |
| 5       | 0 | 0 | 0 | 0 | 0 | 1  | 6  |
| 6       | 0 | 0 | 0 | 0 | 0 | 0  | 1  |
+---------+---+---+---+---+---+----+----+
>>> main.print_values(7, 7, main.f)
+---------+---+---+---+----+----+-----+-----+
| f(x, y) | 0 | 1 | 2 | 3  | 4  | 5   | 6   |
+---------+---+---+---+----+----+-----+-----+
| 0       | 1 | 1 | 1 | 1  | 1  | 1   | 1   |
| 1       | 0 | 1 | 2 | 3  | 4  | 5   | 6   |
| 2       | 0 | 1 | 3 | 6  | 10 | 15  | 21  |
| 3       | 0 | 1 | 4 | 10 | 20 | 35  | 56  |
| 4       | 0 | 1 | 5 | 15 | 35 | 70  | 126 |
| 5       | 0 | 1 | 6 | 21 | 56 | 126 | 252 |
| 6       | 0 | 1 | 7 | 28 | 84 | 210 | 462 |
+---------+---+---+---+----+----+-----+-----+