%I
%S 5,13,18,31,49,80,129,209,338,547,885,1432,2317,3749,6066,9815,15881,
%T 25696,41577,67273,108850,176123,284973,461096,746069,1207165,1953234,
%U 3160399,5113633,8274032,13387665,21661697,35049362,56711059,91760421,148471480
%N Fibonacci sequence beginning 5, 13.
%H Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (1, 1).
%F a(0) = 5, a(1) = 13, a(n) = a(n  2) + a(n  1).
%F G.f.: (5 + 8x)/(1  x  x^2).  _Philippe DelĂ©ham_, Nov 20 2008
%t LinearRecurrence[{1, 1}, {5, 13}, 50] (* _Harvey P. Dale_, Jul 10 2017 *)
%t CoefficientList[Series[(5 + 8x)/(1  x  x^2), {x, 0, 50}], x] (* _Stefano Spezia_, Oct 11 2018 *)
%Y Cf. A000032.
%K nonn,easy
%O 0,1
%A _N. J. A. Sloane_
