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A074725 F(n) and C(2n,n) are relatively prime, where F(n) is the n-th Fibonacci number (A000045(n)). 0

%I

%S 1,2,4,5,11,13,14,17,22,23,25,26,29,31,34,38,41,43,46,47,53,59,61,62,

%T 67,71,73,74,82,83,86,89,94,101,103,106,107,109,113,118,121,122,125,

%U 127,131,134,137,142,146,149,151,155,158,163,166,167,173,175,179,181

%N F(n) and C(2n,n) are relatively prime, where F(n) is the n-th Fibonacci number (A000045(n)).

%F It seems that a(n) is asymptotic to c*n*Log(Log(n)) with 2.1< c <2.3

%K nonn

%O 1,2

%A _Benoit Cloitre_, Sep 04 2002

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Last modified September 21 13:37 EDT 2019. Contains 327253 sequences. (Running on oeis4.)