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%I #15 Jan 14 2014 03:33:52
%S 1,1,1,4,6,1,14,32,18,72,90,13,234,420,372,1536,1598,360,4332,12096,
%T 5908,18000,28658,2496,93062,122148,106920,473760,514230,142848,
%U 1349244,3391488,1782180,5708056,11924808,1555200,24664200,40504200,31758948,209212416
%N Sum of odd divisors of Fibonacci(n).
%H Charles R Greathouse IV, <a href="/A193293/b193293.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) = A000593(A000045(n)). - _Michel Marcus_, Jan 14 2014
%e a(9) = 18 because Fibonacci(9) = 34 = 2*17 and the sum of the odd divisors
%e {1, 17}= 18.
%t Table[Total[Select[Divisors[Fibonacci[n]], OddQ[ # ]&]], {n, 75}]
%o (PARI) a(n)=n=fibonacci(n);sigma(n>>valuation(n,2)) \\ _Charles R Greathouse IV_, Jul 31 2011
%Y Cf. A000045, A193292.
%K nonn
%O 1,4
%A _Michel Lagneau_, Jul 21 2011