Enter n, get F(n) using BigInt, ratio F(n)/F(n−1), a compact spiral, and a values table.
F(n)
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Ratio F(n)/F(n−1)
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→ φ ≈ 1.6180339887…
Digits
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Spiral (compact sketch)
Values Table
First 50 terms or up to n (whichever is smaller).
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