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Task/Fibonacci-sequence/Python/fibonacci-sequence-3.py
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Task/Fibonacci-sequence/Python/fibonacci-sequence-3.py
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def fib(n,x=[0,1]):
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for i in range(abs(n)-1): x=[x[1],sum(x)]
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return x[1]*pow(-1,abs(n)-1) if n<0 else x[1] if n else 0
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for i in range(-30,31): print fib(i),
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