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A117730 Numbers for which the largest proper divisor is a Fibonacci number. 0

%I

%S 2,3,4,5,6,7,9,10,11,13,15,16,17,19,23,25,26,29,31,37,39,41,42,43,47,

%T 53,59,61,63,65,67,68,71,73,79,83,89,91,97,101,103,107,109,110,113,

%U 127,131,137,139,143,149,151,157,163,165,167,169,173,178,179,181,191,193,197,199,211,223,227,229

%N Numbers for which the largest proper divisor is a Fibonacci number.

%e 275 is in the sequence because the largest proper divisor is 55 and 55 is a Fibonacci number.

%t fibs=Fibonacci[Range[25]]; Select[Range[2,500], MemberQ[fibs,Last[Most[Divisors[#]]]]&] [From Harvey P. Dale, Dec. 20, 2010]

%Y Cf. A000040, A000045.

%K nonn

%O 0,1

%A Luc Stevens (lms022(AT)yahoo.com), Apr 13 2006

%E Corrected and additional terms provided by Harvey P. Dale, Dec. 20, 2010

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Last modified April 14 05:00 EDT 2021. Contains 342941 sequences. (Running on oeis4.)