Make this program if you dare!!!!

Question

if the input is 5,then output should be
1
2 9
3 8 10
4 7 11 14
5 6 12 13 15

Note:1.Without Array
2.it is just a program of "Flow Of Control"
i.e. it can be made only with
if condition,loop,cout etc.
3.Don't simply do this:
cout<<"1\n";
cout<<"2 9\n";
cout<<"3 8 10\n";
cout<<"4 7 11 14\n";
cout<<"5 6 12 13 15\n";

Answer 1

Well, so be more imaginative in the title to differenciate ^^

Answer 2

Please, don't send each days the same post! @@

Answer 3

this is not same as before
it is based on input