How to get this pattern for user input n ?

Question

Say, accept n=4 then
1*2*3*4 \n
9*10*11*12\n
13*14*15*16\n
5*6*7*8
and for n=3
1*2*3
7*8*9
4*5*6

Answer 1

Which line ordering do you expect for n=5 or higher?