scientific_comp_projects/CODE/[python]kattis/trivial/planina.py

iter = input('How many iterations (1<N<15) :')
iter = int(iter)

def planina(n):
    if n>1 :
        return planina(n-1)+planina(n-1)-1
    if n==1 :
        return 3
        
p = planina(iter)**2
print(p)