include

include

include

include

int main() {

int n;
scanf("%d", &n);
int size=2*n-1;
int start=0;
int end=size-1;
int a[size][size];
while(n!=0)
{
    for(int i=start;i<=end;i++){
        for(int j=start;j<=end;j++){

            if(i==start||i==end||j==start||j==end)
            a[i][j]=n;

        }
    }
    start++;
    end--;
    n--;

}

for(int i=0;i<size;i++){
    for(int j=0;j<size;j++){
        printf("%d ",a[i][j]);
    }
    printf("\n");
}
return 0;

}