OFFSET
1,4
LINKS
Index entries for linear recurrences with constant coefficients, signature (1,5,-1,-5,1,1).
FORMULA
a(n)=a(n-1)+5*a(n-2)-a(n-3)-5*a(n-4)+a(n-5)+a(n-6).
G.f.: x^2*(x^2+x-1)/(x^6+x^5-5*x^4-x^3+5*x^2+x-1). [Colin Barker, Nov 23 2012]
EXAMPLE
MATHEMATICA
(See A192772.)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jul 09 2011
STATUS
approved