Triangle Number Pattern2.py

# Print the following pattern for the given N number of rows.
# Pattern for N = 4
# 1
# 23
# 456
# 78910

n=int(input())
i=1
p=1
while i<=n:
    j=1
    while j<=i:
        print(p,end='')
        j=j+1
        p=p+1
    print()
    i=i+1