Lucas and Fibonacci Number Calculator

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The Lucas series or Lucas numbers are an integer sequence. Fibonacci numbers and Lucas numbers form complementary instances of Lucas sequences.

The sequence of Lucas numbers is: 2, 1, 3, 4, 7, 11, 18, 29, 47, 76, 123,.....

Ln = 2 if n = 0;

Ln = 1 if n = 1;

Ln = Ln-1 + Ln-2 if n ＞ 1;

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