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A206609 Fibonacci sequence beginning 13, 9. 3

%I

%S 13,9,22,31,53,84,137,221,358,579,937,1516,2453,3969,6422,10391,16813,

%T 27204,44017,71221,115238,186459,301697,488156,789853,1278009,2067862,

%U 3345871,5413733,8759604,14173337,22932941,37106278,60039219,97145497,157184716

%N Fibonacci sequence beginning 13, 9.

%H Vincenzo Librandi, <a href="/A206609/b206609.txt">Table of n, a(n) for n = 1..1000</a>

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (1, 1).

%t LinearRecurrence[{1, 1}, {13, 9}, 80]

%o (MAGMA) I:=[13, 9]; [n le 2 select I[n] else Self(n-1)+Self(n-2): n in [1..40]]; \\ _Vincenzo Librandi_, Feb 16 2012

%Y Cf. A000032, A000045, A206607, A206608.

%K nonn,easy

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Feb 10 2012

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Last modified January 28 10:02 EST 2020. Contains 331319 sequences. (Running on oeis4.)