OFFSET
0,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..1000
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (1,1).
FORMULA
G.f.: 25*x/(1 - x - x^2). - Philippe Deléham, Nov 20 2008
a(n) = (-25/2)*(Fibonacci(n) - Lucas(n)). - Harvey P. Dale, Nov 22 2012
a(n) = Lucas(n+5) + Lucas(n-5), with Lucas(-i) = (-1)^i*Lucas(i) for the negative indices. - Bruno Berselli, Dec 27 2016
MATHEMATICA
LinearRecurrence[{1, 1}, {0, 25}, 30] (* or *) Table[(-25/2)(Fibonacci[n] - LucasL[n]), {n, 50}] (* Harvey P. Dale, Nov 22 2012 *)
PROG
(Magma) [Lucas(n+5)+Lucas(n-5): n in [0..40]]; // Bruno Berselli, Dec 27 2016
(PARI) for(n=0, 50, print1(25*fibonacci(n), ", ")) \\ G. C. Greubel, Aug 26 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved