Fibonacci Sequence Calculator

Calculate the nth term of the Fibonacci sequence, where each number is the sum of the two preceding ones.

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Fibonacci Number
55

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Formula

F(n) = F(n−1) + F(n−2), with F(1) = F(2) = 1

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Number Theory and Sequences: Fibonacci, Combinations, and Basic Operations

The Fibonacci sequence, combinations with repetition, sums of consecutive integers, reciprocals, and absolute value — five foundational number theory calculations.

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