Fibonacci Calculator
Generate Fibonacci sequences, check numbers, and visualize the golden spiral.
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The ratio of consecutive Fibonacci numbers converges to the golden ratio.
φ = 1.618033...
Golden Ratio = (1 + √5) / 2
F(n)/F(n-1) → φ as n → ∞
F(n)/F(n-1) → φ as n → ∞