OFFSET
0,3
LINKS
Index entries for linear recurrences with constant coefficients, signature (2,3,-4,1).
FORMULA
G.f.: x^2*(-2+x) / ( (x^2-x-1)*(x^2-3*x+1) ).
a(n) = (Fibonacci(2*n)+(-1)^n*Fibonacci(n))/2. - Vladeta Jovovic, Aug 30 2004
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved