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n-1-1-n-F-n-




Question Number 146836 by mnjuly1970 last updated on 16/Jul/21
              Σ_(n=1) ^∞ (1/(ϕ^( n)  F_n )) =?
$$ \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\underset{{n}=\mathrm{1}} {\overset{\infty} {\sum}}\frac{\mathrm{1}}{\varphi^{\:{n}} \:\mathrm{F}_{{n}} }\:=? \\ $$

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