Definition:Fibonacci Number/Sequence/Negative

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Sequence of Fibonacci Numbers for Negative Index

The sequence of Fibonacci numbers for negative index begins:

$\ldots, 89, -55, 34, -21, 13, -8, 5, -3, 2, -1, 1, 0$

This sequence is A039834 in the On-Line Encyclopedia of Integer Sequences (N. J. A. Sloane (Ed.), 2008).


Sources