n=input(“enter number n”)
s=0
z=(2*s)+1
print()
try:
n = int(n)
if n>=0 :
for x in range(n,-1,-1):
for y in range(1,x+1):
print(y,end=" ")
if x>0 and x!=n:
print(z*"* ")
z=z+2
print()
except ValueError:
print(“Input is not an integer.”)