OFFSET
0,2
LINKS
Cesar Bautista, Table of n, a(n) for n = 0..219
C. Bautista-Ramos and C. Guillen-Galvan, Fibonacci numbers of generalized Zykov sums, J. Integer Seq., 15 (2012), Article 12.7.8.
Index entries for linear recurrences with constant coefficients, signature (12,-3,-25,-2,1).
FORMULA
a(n) = 12*a(n-1)-3*a(n-2)-25*a(n-3)-2*a(n-4)+a(n-5) for n>=5, with a(0)=1, a(1)=18, a(2)=199, a(3)=2309, a(4)=26660.
G.f.: (1 + 6*x - 14*x^2 + x^4)/(1 - 12*x + 3*x^2 + 25*x^3 + 2*x^4 - x^5). - Charles R Greathouse IV, Apr 04 2012
PROG
(PARI) Vec((1+6*x-14*x^2+x^4)/(1-12*x+3*x^2+25*x^3+2*x^4-x^5)+O(x^99)) \\ Charles R Greathouse IV, Apr 04 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Cesar Bautista, Apr 04 2012
STATUS
approved