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A135709 Not the sum of three distinct nonzero Fibonacci numbers. 5

%I #11 Sep 08 2019 14:39:29

%S 1,2,3,4,5,7,33,46,51,53,54,67,72,74,75,80,82,83,85,86,87,88,101,106,

%T 108,109,114,116,117,119,120,121,122,127,129,130,132,133,134,135,137,

%U 138,139,140,141,142,143,156,161,163,164,169,171,172,174,175,176,177,182,184,185

%N Not the sum of three distinct nonzero Fibonacci numbers.

%H R. J. Mathar, <a href="/A135709/b135709.txt">Table of n, a(n) for n = 1..1000</a>

%H Colm Mulcahy, <a href="http://www.maa.org/community/maa-columns/past-columns-card-colm/additional-certainties">Additional Certainties</a>, MAA, Feb 2008

%p # needs isA135558 from A135558

%p A135709 := proc(n)

%p option remember;

%p local a;

%p if n = 1 then

%p 1;

%p else

%p for a from procname(n-1)+1 do

%p if not isA135558(a) then

%p return a;

%p end if;

%p end do:

%p end if;

%p end proc: # _R. J. Mathar_, Sep 09 2015

%t With[{f=15},Complement[Range[Fibonacci[f]],Total/@Subsets[Fibonacci[ Range[ 2,f]],{3}]]] (* _Harvey P. Dale_, Sep 08 2019 *)

%Y Complement of A135558.

%Y Cf. A179244, A111458.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Mar 05 2008

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)