Scanner scn = new Scanner(System.in);
int n = scn.nextInt();
int row=1;
int nr = 2*n +1;
int nst = 2*n +1;
int nsp = 0;
int val = n;
while(row<=nr) {
for(int csp = 1;csp<=nsp;csp++) {
System.out.print(" ");
}
for(int cst = 1;cst<=nst;cst++) {
System.out.print(val);
if(cst<=nst/2) {
val--;
}
else {
val++;
}
}
System.out.println();
if(row<=nr/2) {
nst-=2;
nsp++;
val-=2;
}
else {
nst+=2;
nsp--;
}
row++;
}