#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n;
    scanf("%d", &n);
    int rowNeed = 0;
    int colNeed = 0;
    int i;

    // get number of coll.
    for(i=n; i>1; i--){
        colNeed ++;
    }
    colNeed = colNeed*2;
    colNeed ++;

    // the row and the col. number is tha same in every case

    rowNeed = colNeed;


    //print

    int col, row;
    int mid = colNeed/2;
    int hat = n;
    int ir;
    int f;
    int d;


    for(row=0; row<rowNeed; row++){
        ir = n;
        f=-1;
        d=0;
        for(col=0; col<colNeed; col++){
            if(col<=mid){
                if(ir>hat){
                    printf("%d ", ir);
                    ir -= 1;
                }
                else if(ir==hat){
                    printf("%d ", hat);
                    f++;
                }
            }
            else if(col>mid){
                if(d<f){
                    printf("%d ", hat);
                    d++;
                }
                else{
                    ir++;
                    printf("%d ",ir);
                }
            }

        }
        if(row<mid){
            hat--;
        }
        else{
            hat++;
        }

        printf("\n");
    }

    return 0;
}