OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (6,24,-64).
FORMULA
G.f.: (1-4x-8x^2)/(1-6x-24x^2+64x^3); a(n)=6a(n-1)+24a(n-2)-64a(n-3); a(n)=2^n/3+8^n/3+(-4)^n/3.
MATHEMATICA
LinearRecurrence[{6, 24, -64}, {1, 2, 28}, 20] (* Harvey P. Dale, Jun 02 2019 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Jul 17 2005
STATUS
approved