# valeur de départ
u = int(input("saisir la valeur de u0 : "))
print (u,"")

# nombre de terma a calculer 
N = int(input("combien de terme a calculer ? "))
print(N,"")

# cacul des N-1 termes suivants de la suite u
for in range(1,N):
if u%2 == 0:
u= u/2
else:
u= 3*u+1
print (u)

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