Question

python

Answer 1

How far did you get with the code and where did you get stuck?

Answer 2

Here's the solution for size 6x6:

#loop over 6 lines
for i in range(6):
#loop over 6 rows
for j in range(6):
#print the desired number and don't ad a new line
print((i+j)%6 +1, end="")
#print a new line after we filled a line
print()

I tested this in python 3.2 and the output is as you explained. To change the the length you can just change the 6 to whatever you want.
To change the starting value change this "(i+j)%6 +1" to (i+j+startingValue)%6 +1.