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Denominator of Sum_{i = Fibonacci(n-1)+1..Fibonacci(n)} 1/i.
1

%I #6 Nov 09 2012 14:05:57

%S 1,1,2,3,20,168,25740,1627920,7600186994400,91351145008363640400,

%T 41220780807793167133364240240011200,

%U 86885947737342403570395603462501113422055643279216000

%N Denominator of Sum_{i = Fibonacci(n-1)+1..Fibonacci(n)} 1/i.

%D Chen, Hongwei; Kennedy, Chris. Harmonic series meets Fibonacci sequence. College Math. J. 43 (2012), no. 3, 237--243. MR2916493

%e 1, 0, 1/2, 1/3, 9/20, 73/168, 11899/25740, 757349/1627920, 3593758191731/7600186994400, 43428537271777524533/91351145008363640400, ...

%Y Cf. A000045, A001008, A002805, A218872.

%K nonn,frac

%O 1,3

%A _N. J. A. Sloane_, Nov 09 2012