Lucas Series

1# Take n
2n = int(input("Enter number of terms: "))
3
4# Generate Lucas series
5if n <= 0:
6    print("Invalid input")
7elif n == 1:
8    print("2")
9elif n == 2:
10    print("2 1")
11else:
12    a, b = 2, 1
13    print(a, b, end=" ")
14    for i in range(2, n):
15        c = a + b
16        print(c, end=" ")
17        a, b = b, c
18    print()