Question

Using Python, write a function recur, which on input a positive integer n retuns the value B_n defined as follows. You can assume that the function is only called with positive integer arguments.

B₁ = 5, B₂​ = 4

B₂​ = B_n-1​* B_n-2​ if n is divisible by 3

B₃​ = B_n-1​ + B_n-2​ otherwise

*Please go step by step with explanation*

Answer 1

File.py

def recur(n):
if n%3==0:
res = n-1 * n-2
print(res)
else:
res = n-1 + n-2
print(res)
return;
  
n=eval(input("Enter value: "))
recur(n)

Output & Indentation:

Python 3.6.1 (default, Dec 2015, 13:05:11) [GCC 4.8.2] on linux 1 def recur (n): 3 5else: Enter value: 5 res n-1 n-2 print (res res n-1n-2 print (res) return 9 10 n-eval (input( "Enter value: ")) 11 recur(n)

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