**Greatest common divisor of a Fibonacci number and its index.**

*0, 1, 1, 1, 1, 5, 2, 1, 1, 1, 5, 1, 12, 1, 1, 5, 1, 1, 2, 1, 5, 1, 1, 1, 24, 25, 1, 1, 1, 1, 10, 1*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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