import time
def triangle_value(n):
    "Print the Triangular numbers for a given list"
    while n > 0:
        #print "the number of digits is", n
        tn1 = (n-1)*0.5
        tnf = tn1*n
        print "The", n, "Triangular number is", tnf
        n = n - 1
        #print tnf
        time.sleep(1)
   
x = input("Enter how many triangular numbers you want to find?")

triangle_value(x)